[exim-cvs] PRDR support, if compiled with EXPERIMENTAL_PRDR

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To: exim-cvs
Betreff: [exim-cvs] PRDR support, if compiled with EXPERIMENTAL_PRDR
Gitweb: http://git.exim.org/exim.git/commitdiff/fd98a5c6771f3a5a686e54370b0525dcc3dca2f9
Commit:     fd98a5c6771f3a5a686e54370b0525dcc3dca2f9
Parent:     514ee161db1166e94b9ee889953f2e9774cee973
Author:     Jeremy Harris <jgh146exb@???>
AuthorDate: Sat Jan 26 23:21:37 2013 +0000
Committer:  Jeremy Harris <jgh146exb@???>
CommitDate: Sat Jan 26 23:21:37 2013 +0000


    PRDR support, if compiled with EXPERIMENTAL_PRDR
---
 doc/doc-docbook/spec.xfpt         |    2 +-
 doc/doc-txt/ChangeLog             |   12 ++
 doc/doc-txt/NewStuff              |    3 +
 doc/doc-txt/experimental-spec.txt |   28 +++++
 src/src/EDITME                    |    4 +
 src/src/acl.c                     |   72 ++++++++++--
 src/src/config.h.defaults         |    1 +
 src/src/deliver.c                 |   19 +++
 src/src/exim.c                    |    3 +
 src/src/globals.c                 |   15 +++
 src/src/globals.h                 |    8 ++
 src/src/macros.h                  |    3 +
 src/src/readconf.c                |    6 +
 src/src/receive.c                 |  110 +++++++++++++++++-
 src/src/smtp_in.c                 |   94 +++++++++++-----
 src/src/structs.h                 |    4 +
 src/src/transports/smtp.c         |  176 +++++++++++++++++++++++++---
 src/src/transports/smtp.h         |    3 +
 test/confs/5500                   |   66 +++++++++++
 test/confs/5510                   |   62 ++++++++++
 test/log/2002                     |    5 +-
 test/log/2102                     |    5 +-
 test/log/5500                     |   17 +++
 test/log/5510                     |   31 +++++
 test/mail/2002.CALLER             |   14 ++-
 test/mail/2102.CALLER             |   14 ++-
 test/mail/5500.user1              |    8 ++
 test/mail/5500.userx              |    7 +
 test/rejectlog/5500               |    8 ++
 test/scripts/0000-Basic/0121      |    3 +
 test/scripts/2000-GnuTLS/2002     |   23 ++++
 test/scripts/2100-OpenSSL/2102    |   23 ++++
 test/scripts/5500-PRDR/5500       |  155 +++++++++++++++++++++++++
 test/scripts/5500-PRDR/5510       |  228 ++++++++++++++++++++++++++++++++++++
 test/scripts/5500-PRDR/REQUIRES   |    1 +
 test/stderr/0121                  |   14 +++
 test/stderr/5500                  |    2 +
 test/stdout/0121                  |    5 +
 test/stdout/2002                  |   40 ++++++-
 test/stdout/2102                  |   56 +++++++++-
 test/stdout/5500                  |  206 +++++++++++++++++++++++++++++++++
 test/stdout/5510                  |  231 +++++++++++++++++++++++++++++++++++++
 42 files changed, 1724 insertions(+), 63 deletions(-)


diff --git a/doc/doc-docbook/spec.xfpt b/doc/doc-docbook/spec.xfpt
index 7126fb0..9c03523 100644
--- a/doc/doc-docbook/spec.xfpt
+++ b/doc/doc-docbook/spec.xfpt
@@ -19603,7 +19603,7 @@ so on when debugging driver configurations. For example, if a &%headers_add%&
option is not working properly, &%debug_print%& could be used to output the
variables it references. A newline is added to the text if it does not end with
one.
-The variables &$transport_name$ and &$router_name$& contain the name of the
+The variables &$transport_name$& and &$router_name$& contain the name of the
transport and the router that called it.


diff --git a/doc/doc-txt/ChangeLog b/doc/doc-txt/ChangeLog
index 3a1e39c..2ce297f 100644
--- a/doc/doc-txt/ChangeLog
+++ b/doc/doc-txt/ChangeLog
@@ -156,6 +156,18 @@ PP/15 Define SIOCGIFCONF_GIVES_ADDR for GNU Hurd.

SC/01 Update eximstats to watch out for senders sending 'HELO [IpAddr]'

+JH/14 SMTP PRDR (http://www.eric-a-hall.com/specs/draft-hall-prdr-00.txt).
+      Server implementation by Todd Lyons, client by JH.
+      Only enabled when compiled with EXPERIMENTAL_PRDR.  A new
+      config variable "prdr_enable" controls whether the server
+      advertises the facility.  If the client requests PRDR a new
+      acl_data_smtp_prdr ACL is called once for each recipient, after
+      the body content is received and before the acl_smtp_data ACL.
+      The client is controlled by bolth of: a hosts_try_prdr option
+      on the smtp transport, and the server advertisement.
+      Default client logging of deliveries and rejections involving
+      PRDR are flagged with the string "PRDR".
+


 Exim version 4.80.1
 -------------------
diff --git a/doc/doc-txt/NewStuff b/doc/doc-txt/NewStuff
index 70890b1..47c5f6f 100644
--- a/doc/doc-txt/NewStuff
+++ b/doc/doc-txt/NewStuff
@@ -126,6 +126,9 @@ Version 4.82
     particularly for debug_print as -bt commandline option does not
     require privilege whereas -d does.


+18. If built with EXPERIMENTAL_PRDR, per-recipient data responses per a
+    proposed extension to SMTP from Eric Hall.
+


Version 4.80
------------
diff --git a/doc/doc-txt/experimental-spec.txt b/doc/doc-txt/experimental-spec.txt
index 7bb1788..f419bfe 100644
--- a/doc/doc-txt/experimental-spec.txt
+++ b/doc/doc-txt/experimental-spec.txt
@@ -6,6 +6,34 @@ about experimental features, all of which are unstable and
liable to incompatible change.


+PRDR support
+--------------------------------------------------------------
+
+Per-Recipient Data Reponse is an SMTP extension proposed by Eric Hall
+in a (now-expired) IETF draft from 2007. It's not hit mainstream
+use, but has apparently been implemented in the META1 MTA.
+
+There is mention at http://mail.aegee.org/intern/sendmail.html
+of a patch to sendmail "to make it PRDR capable".
+
+ ref: http://www.eric-a-hall.com/specs/draft-hall-prdr-00.txt
+
+If Exim is built with EXPERIMENTAL_PRDR there is a new config
+boolean "prdr_enable" which controls whether PRDR is advertised
+as part of an EHLO response, a new "acl_data_smtp_prdr" ACL
+(called for each recipient, after data arrives but before the
+data ACL), and a new smtp transport option "hosts_try_prdr".
+
+PRDR may be used to support per-user content filtering. Without it
+one must defer any recipient after the first that has a different
+content-filter configuration. With PRDR, the RCPT-time check
+for this can be disabled when the MAIL-time $smtp_command included
+"PRDR". Any required difference in behaviour of the main DATA-time
+ACL should however depend on the PRDR-time ACL having run, as Exim
+will avoid doing so in some situations (eg. single-recipient mails).
+
+
+
OCSP Stapling support
--------------------------------------------------------------

diff --git a/src/src/EDITME b/src/src/EDITME
index 95a0c02..7de915a 100644
--- a/src/src/EDITME
+++ b/src/src/EDITME
@@ -460,6 +460,10 @@ EXIM_MONITOR=eximon.bin

# EXPERIMENTAL_OCSP=yes

+# Uncomment the following line to add Per-Recipient-Data-Response support.
+
+# EXPERIMENTAL_PRDR=yes
+


 ###############################################################################
diff --git a/src/src/acl.c b/src/src/acl.c
index 5af408c..f61d2df 100644
--- a/src/src/acl.c
+++ b/src/src/acl.c
@@ -368,6 +368,9 @@ static unsigned int cond_forbids[] = {
   (unsigned int)
   ~((1<<ACL_WHERE_MAIL)|(1<<ACL_WHERE_RCPT)|       /* add_header */
     (1<<ACL_WHERE_PREDATA)|(1<<ACL_WHERE_DATA)|
+  #ifdef EXPERIMENTAL_PRDR
+    (1<<ACL_WHERE_PRDR)|
+  #endif
     (1<<ACL_WHERE_MIME)|(1<<ACL_WHERE_NOTSMTP)|
     (1<<ACL_WHERE_DKIM)|
     (1<<ACL_WHERE_NOTSMTP_START)),
@@ -380,6 +383,9 @@ static unsigned int cond_forbids[] = {
   (1<<ACL_WHERE_AUTH)|                             /* bmi_optin */
     (1<<ACL_WHERE_CONNECT)|(1<<ACL_WHERE_HELO)|
     (1<<ACL_WHERE_DATA)|(1<<ACL_WHERE_MIME)|
+  #ifdef EXPERIMENTAL_PRDR
+    (1<<ACL_WHERE_PRDR)|
+  #endif
     (1<<ACL_WHERE_ETRN)|(1<<ACL_WHERE_EXPN)|
     (1<<ACL_WHERE_MAILAUTH)|
     (1<<ACL_WHERE_MAIL)|(1<<ACL_WHERE_STARTTLS)|
@@ -398,7 +404,11 @@ static unsigned int cond_forbids[] = {


   #ifdef EXPERIMENTAL_DCC
   (unsigned int)
-  ~((1<<ACL_WHERE_DATA)|(1<<ACL_WHERE_NOTSMTP)),   /* dcc */
+  ~((1<<ACL_WHERE_DATA)|                           /* dcc */
+  #ifdef EXPERIMENTAL_PRDR
+    (1<<ACL_WHERE_PRDR)|
+  #endif /* EXPERIMENTAL_PRDR */
+    (1<<ACL_WHERE_NOTSMTP)),
   #endif


#ifdef WITH_CONTENT_SCAN
@@ -410,7 +420,11 @@ static unsigned int cond_forbids[] = {

   #ifdef WITH_OLD_DEMIME
   (unsigned int)
-  ~((1<<ACL_WHERE_DATA)|(1<<ACL_WHERE_NOTSMTP)),   /* demime */
+  ~((1<<ACL_WHERE_DATA)|                           /* demime */
+  #ifdef EXPERIMENTAL_PRDR
+    (1<<ACL_WHERE_PRDR)|
+  #endif /* EXPERIMENTAL_PRDR */
+    (1<<ACL_WHERE_NOTSMTP)),
   #endif


   #ifndef DISABLE_DKIM
@@ -425,7 +439,11 @@ static unsigned int cond_forbids[] = {
     (1<<ACL_WHERE_NOTSMTP_START),


   (unsigned int)
-  ~(1<<ACL_WHERE_RCPT),                            /* domains */
+  ~((1<<ACL_WHERE_RCPT)                            /* domains */
+  #ifdef EXPERIMENTAL_PRDR
+    |(1<<ACL_WHERE_PRDR)
+  #endif
+    ),


   (1<<ACL_WHERE_NOTSMTP)|                          /* encrypted */
     (1<<ACL_WHERE_CONNECT)|
@@ -438,7 +456,11 @@ static unsigned int cond_forbids[] = {
     (1<<ACL_WHERE_NOTSMTP_START),


   (unsigned int)
-  ~(1<<ACL_WHERE_RCPT),                            /* local_parts */
+  ~((1<<ACL_WHERE_RCPT)                             /* local_parts */
+  #ifdef EXPERIMENTAL_PRDR
+    |(1<<ACL_WHERE_PRDR)
+  #endif
+    ),


   0,                                               /* log_message */


@@ -448,7 +470,11 @@ static unsigned int cond_forbids[] = {

   #ifdef WITH_CONTENT_SCAN
   (unsigned int)
-  ~((1<<ACL_WHERE_DATA)|(1<<ACL_WHERE_NOTSMTP)),   /* malware */
+  ~((1<<ACL_WHERE_DATA)|                           /* malware */
+  #ifdef EXPERIMENTAL_PRDR
+    (1<<ACL_WHERE_PRDR)|
+  #endif /* EXPERIMENTAL_PRDR */
+    (1<<ACL_WHERE_NOTSMTP)),
   #endif


   0,                                               /* message */
@@ -465,13 +491,20 @@ static unsigned int cond_forbids[] = {


   #ifdef WITH_CONTENT_SCAN
   (unsigned int)
-  ~((1<<ACL_WHERE_DATA)|(1<<ACL_WHERE_NOTSMTP)|    /* regex */
+  ~((1<<ACL_WHERE_DATA)|                           /* regex */
+  #ifdef EXPERIMENTAL_PRDR
+    (1<<ACL_WHERE_PRDR)|
+  #endif /* EXPERIMENTAL_PRDR */
+    (1<<ACL_WHERE_NOTSMTP)|
     (1<<ACL_WHERE_MIME)),
   #endif


   (unsigned int)
   ~((1<<ACL_WHERE_MAIL)|(1<<ACL_WHERE_RCPT)|       /* remove_header */
     (1<<ACL_WHERE_PREDATA)|(1<<ACL_WHERE_DATA)|
+  #ifdef EXPERIMENTAL_PRDR
+    (1<<ACL_WHERE_PRDR)|
+  #endif
     (1<<ACL_WHERE_MIME)|(1<<ACL_WHERE_NOTSMTP)|
     (1<<ACL_WHERE_NOTSMTP_START)),


@@ -491,7 +524,11 @@ static unsigned int cond_forbids[] = {

   #ifdef WITH_CONTENT_SCAN
   (unsigned int)
-  ~((1<<ACL_WHERE_DATA)|(1<<ACL_WHERE_NOTSMTP)),   /* spam */
+  ~((1<<ACL_WHERE_DATA)|                           /* spam */
+  #ifdef EXPERIMENTAL_PRDR
+    (1<<ACL_WHERE_PRDR)|
+  #endif /* EXPERIMENTAL_PRDR */
+    (1<<ACL_WHERE_NOTSMTP)),
   #endif


#ifdef EXPERIMENTAL_SPF
@@ -535,6 +572,9 @@ static unsigned int control_forbids[] = {

   #ifndef DISABLE_DKIM
   (1<<ACL_WHERE_DATA)|(1<<ACL_WHERE_NOTSMTP)|      /* dkim_disable_verify */
+  #ifdef EXPERIMENTAL_PRDR
+    (1<<ACL_WHERE_PRDR)|
+  #endif /* EXPERIMENTAL_PRDR */
     (1<<ACL_WHERE_NOTSMTP_START),
   #endif


@@ -562,11 +602,13 @@ static unsigned int control_forbids[] = {
   (unsigned int)
   ~((1<<ACL_WHERE_MAIL)|(1<<ACL_WHERE_RCPT)|       /* freeze */
     (1<<ACL_WHERE_PREDATA)|(1<<ACL_WHERE_DATA)|
+    // (1<<ACL_WHERE_PRDR)|    /* Not allow one user to freeze for all */
     (1<<ACL_WHERE_NOTSMTP)|(1<<ACL_WHERE_MIME)),


   (unsigned int)
   ~((1<<ACL_WHERE_MAIL)|(1<<ACL_WHERE_RCPT)|       /* queue_only */
     (1<<ACL_WHERE_PREDATA)|(1<<ACL_WHERE_DATA)|
+    // (1<<ACL_WHERE_PRDR)|    /* Not allow one user to freeze for all */
     (1<<ACL_WHERE_NOTSMTP)|(1<<ACL_WHERE_MIME)),


   (unsigned int)
@@ -582,17 +624,24 @@ static unsigned int control_forbids[] = {
   (unsigned int)
   ~((1<<ACL_WHERE_MAIL)|(1<<ACL_WHERE_RCPT)|       /* no_mbox_unspool */
     (1<<ACL_WHERE_PREDATA)|(1<<ACL_WHERE_DATA)|
+    // (1<<ACL_WHERE_PRDR)|    /* Not allow one user to freeze for all */
     (1<<ACL_WHERE_MIME)),
   #endif


   (unsigned int)
   ~((1<<ACL_WHERE_MAIL)|(1<<ACL_WHERE_RCPT)|       /* fakedefer */
     (1<<ACL_WHERE_PREDATA)|(1<<ACL_WHERE_DATA)|
+  #ifdef EXPERIMENTAL_PRDR
+    (1<<ACL_WHERE_PRDR)|
+  #endif /* EXPERIMENTAL_PRDR */
     (1<<ACL_WHERE_MIME)),


   (unsigned int)
   ~((1<<ACL_WHERE_MAIL)|(1<<ACL_WHERE_RCPT)|       /* fakereject */
     (1<<ACL_WHERE_PREDATA)|(1<<ACL_WHERE_DATA)|
+  #ifdef EXPERIMENTAL_PRDR
+    (1<<ACL_WHERE_PRDR)|
+  #endif /* EXPERIMENTAL_PRDR */
     (1<<ACL_WHERE_MIME)),


   (1<<ACL_WHERE_NOTSMTP)|                          /* no_multiline */
@@ -4067,7 +4116,11 @@ sender_verified_failed = NULL;
 ratelimiters_cmd = NULL;
 log_reject_target = LOG_MAIN|LOG_REJECT;


-if (where == ACL_WHERE_RCPT)
+#ifdef EXPERIMENTAL_PRDR
+if (where == ACL_WHERE_RCPT || where == ACL_WHERE_PRDR )
+#else
+if (where == ACL_WHERE_RCPT )
+#endif
   {
   adb = address_defaults;
   addr = &adb;
@@ -4107,6 +4160,9 @@ If conn-failure, no action (and keep the spooled copy).
 switch (where)
 {
 case ACL_WHERE_RCPT:
+#ifdef EXPERIMENTAL_PRDR
+case ACL_WHERE_PRDR:
+#endif
   if( rcpt_count > 1 )
     cancel_cutthrough_connection("more than one recipient");
   else if (rc == OK  &&  cutthrough_delivery  &&  cutthrough_fd < 0)
diff --git a/src/src/config.h.defaults b/src/src/config.h.defaults
index 3610518..b6772c2 100644
--- a/src/src/config.h.defaults
+++ b/src/src/config.h.defaults
@@ -166,6 +166,7 @@ it's a default value. */
 #define EXPERIMENTAL_BRIGHTMAIL
 #define EXPERIMENTAL_DCC
 #define EXPERIMENTAL_OCSP
+#define EXPERIMENTAL_PRDR
 #define EXPERIMENTAL_SPF
 #define EXPERIMENTAL_SRS


diff --git a/src/src/deliver.c b/src/src/deliver.c
index e2605ab..23e63d5 100644
--- a/src/src/deliver.c
+++ b/src/src/deliver.c
@@ -785,6 +785,11 @@ else
       }
     }


+  #ifdef EXPERIMENTAL_PRDR
+  if (addr->flags & af_prdr_used)
+    s = string_append(s, &size, &ptr, 1, US" PRDR");
+  #endif
+
   if ((log_extra_selector & LX_smtp_confirmation) != 0 &&
       addr->message != NULL)
     {
@@ -2913,6 +2918,11 @@ while (!done)
     while (*ptr++);
     break;


+#ifdef EXPERIMENTAL_PRDR
+    case 'P':
+      addr->flags |= af_prdr_used; break;
+#endif
+
     case 'A':
     if (addr == NULL)
       {
@@ -4017,6 +4027,10 @@ for (delivery_count = 0; addr_remote != NULL; delivery_count++)
         rmt_dlv_checked_write(fd, big_buffer, ptr - big_buffer);
     }


+      #ifdef EXPERIMENTAL_PRDR
+      if (addr->flags & af_prdr_used) rmt_dlv_checked_write(fd, "P", 1);
+      #endif
+
       /* Retry information: for most success cases this will be null. */


       for (r = addr->retries; r != NULL; r = r->next)
@@ -6101,6 +6115,11 @@ if (addr_remote != NULL)
     regex_must_compile(US"\\n250[\\s\\-]STARTTLS(\\s|\\n|$)", FALSE, TRUE);
   #endif


+  #ifdef EXPERIMENTAL_PRDR
+  if (regex_PRDR == NULL) regex_PRDR =
+    regex_must_compile(US"\\n250[\\s\\-]PRDR(\\s|\\n|$)", FALSE, TRUE);
+  #endif
+
   /* Now sort the addresses if required, and do the deliveries. The yield of
   do_remote_deliveries is FALSE when mua_wrapper is set and all addresses
   cannot be delivered in one transaction. */
diff --git a/src/src/exim.c b/src/src/exim.c
index 91a3f7a..e66a966 100644
--- a/src/src/exim.c
+++ b/src/src/exim.c
@@ -819,6 +819,9 @@ fprintf(f, "Support for:");
 #ifdef EXPERIMENTAL_OCSP
   fprintf(f, " Experimental_OCSP");
 #endif
+#ifdef EXPERIMENTAL_PRDR
+  fprintf(f, " Experimental_PRDR");
+#endif
 fprintf(f, "\n");


 fprintf(f, "Lookups (built-in):");
diff --git a/src/src/globals.c b/src/src/globals.c
index 43cf73d..5db858b 100644
--- a/src/src/globals.c
+++ b/src/src/globals.c
@@ -145,6 +145,12 @@ uschar *tls_verify_certificates= NULL;
 uschar *tls_verify_hosts       = NULL;
 #endif


+#ifdef EXPERIMENTAL_PRDR
+/* Per Recipient Data Response variables */
+BOOL    prdr_enable            = FALSE;
+BOOL    prdr_requested         = FALSE;
+const pcre *regex_PRDR         = NULL;
+#endif


 /* Input-reading functions for messages, so we can use special ones for
 incoming TCP/IP. The defaults use stdin. We never need these for any
@@ -202,6 +208,9 @@ uschar *acl_removed_headers    = NULL;
 uschar *acl_smtp_auth          = NULL;
 uschar *acl_smtp_connect       = NULL;
 uschar *acl_smtp_data          = NULL;
+#ifdef EXPERIMENTAL_PRDR
+uschar *acl_smtp_data_prdr     = NULL;
+#endif
 #ifndef DISABLE_DKIM
 uschar *acl_smtp_dkim          = NULL;
 #endif
@@ -235,6 +244,9 @@ uschar *acl_wherenames[]       = { US"RCPT",
                                    US"MIME",
                                    US"DKIM",
                                    US"DATA",
+#ifdef EXPERIMENTAL_PRDR
+                                   US"PRDR",
+#endif
                                    US"non-SMTP",
                                    US"AUTH",
                                    US"connection",
@@ -257,6 +269,9 @@ uschar *acl_wherecodes[]       = { US"550",     /* RCPT */
                                    US"550",     /* MIME */
                                    US"550",     /* DKIM */
                                    US"550",     /* DATA */
+#ifdef EXPERIMENTAL_PRDR
+                                   US"550",    /* RCPT PRDR */
+#endif
                                    US"0",       /* not SMTP; not relevant */
                                    US"503",     /* AUTH */
                                    US"550",     /* connect */
diff --git a/src/src/globals.h b/src/src/globals.h
index 06cbf31..8d83be7 100644
--- a/src/src/globals.h
+++ b/src/src/globals.h
@@ -147,6 +147,10 @@ extern uschar *acl_removed_headers;    /* Headers deleted by an ACL */
 extern uschar *acl_smtp_auth;          /* ACL run for AUTH */
 extern uschar *acl_smtp_connect;       /* ACL run on SMTP connection */
 extern uschar *acl_smtp_data;          /* ACL run after DATA received */
+#ifdef EXPERIMENTAL_PRDR
+extern uschar *acl_smtp_data_prdr;     /* ACL run after DATA received if in PRDR mode*/
+const extern pcre *regex_PRDR;         /* For recognizing PRDR settings */
+#endif
 #ifndef DISABLE_DKIM
 extern uschar *acl_smtp_dkim;          /* ACL run for DKIM signatures / domains */
 #endif
@@ -560,6 +564,10 @@ extern uschar *percent_hack_domains;   /* Local domains for which '% operates */
 extern uschar *pid_file_path;          /* For writing daemon pids */
 extern uschar *pipelining_advertise_hosts; /* As it says */
 extern BOOL    pipelining_enable;      /* As it says */
+#ifdef EXPERIMENTAL_PRDR
+extern BOOL    prdr_enable;            /* As it says */
+extern BOOL    prdr_requested;         /* Connecting mail server wants PRDR */
+#endif
 extern BOOL    preserve_message_logs;  /* Save msglog files */
 extern uschar *primary_hostname;       /* Primary name of this computer */
 extern BOOL    print_topbitchars;      /* Topbit chars are printing chars */
diff --git a/src/src/macros.h b/src/src/macros.h
index f19d6fd..b878b41 100644
--- a/src/src/macros.h
+++ b/src/src/macros.h
@@ -813,6 +813,9 @@ enum { ACL_WHERE_RCPT,       /* Some controls are for RCPT only */
        ACL_WHERE_MIME,       /* ) implemented by <= WHERE_NOTSMTP           */
        ACL_WHERE_DKIM,       /* )                                           */
        ACL_WHERE_DATA,       /* )                                           */
+#ifdef EXPERIMENTAL_PRDR
+       ACL_WHERE_PRDR,       /* )                                           */
+#endif
        ACL_WHERE_NOTSMTP,    /* )                                           */


        ACL_WHERE_AUTH,       /* These remaining ones are not currently    */
diff --git a/src/src/readconf.c b/src/src/readconf.c
index dbec45d..bba5325 100644
--- a/src/src/readconf.c
+++ b/src/src/readconf.c
@@ -140,6 +140,9 @@ static optionlist optionlist_config[] = {
   { "acl_smtp_auth",            opt_stringptr,   &acl_smtp_auth },
   { "acl_smtp_connect",         opt_stringptr,   &acl_smtp_connect },
   { "acl_smtp_data",            opt_stringptr,   &acl_smtp_data },
+#ifdef EXPERIMENTAL_PRDR
+  { "acl_smtp_data_prdr",       opt_stringptr,   &acl_smtp_data_prdr },
+#endif
 #ifndef DISABLE_DKIM
   { "acl_smtp_dkim",            opt_stringptr,   &acl_smtp_dkim },
 #endif
@@ -316,6 +319,9 @@ static optionlist optionlist_config[] = {
 #endif
   { "pid_file_path",            opt_stringptr,   &pid_file_path },
   { "pipelining_advertise_hosts", opt_stringptr, &pipelining_advertise_hosts },
+#ifdef EXPERIMENTAL_PRDR
+  { "prdr_enable",              opt_bool,        &prdr_enable },
+#endif
   { "preserve_message_logs",    opt_bool,        &preserve_message_logs },
   { "primary_hostname",         opt_stringptr,   &primary_hostname },
   { "print_topbitchars",        opt_bool,        &print_topbitchars },
diff --git a/src/src/receive.c b/src/src/receive.c
index efd0766..e0c1c73 100644
--- a/src/src/receive.c
+++ b/src/src/receive.c
@@ -482,6 +482,34 @@ recipients_list[recipients_count++].errors_to = NULL;



 /*************************************************
+*        Send user response message              *
+*************************************************/
+        
+/* This function is passed a default response code and a user message. It calls
+smtp_message_code() to check and possibly modify the response code, and then
+calls smtp_respond() to transmit the response. I put this into a function
+just to avoid a lot of repetition.
+            
+Arguments:               
+  code         the response code
+  user_msg     the user message
+
+Returns:       nothing
+*/        
+            
+static void 
+smtp_user_msg(uschar *code, uschar *user_msg)
+{           
+int len = 3;
+smtp_message_code(&code, &len, &user_msg, NULL);
+smtp_respond(code, len, TRUE, user_msg);
+}           
+                        
+            
+          
+          
+
+/*************************************************
 *        Remove a recipient from the list        *
 *************************************************/


@@ -3199,6 +3227,77 @@ else
       goto TIDYUP;
 #endif /* WITH_CONTENT_SCAN */


+#ifdef EXPERIMENTAL_PRDR
+    if (prdr_requested && recipients_count > 1 && acl_smtp_data_prdr != NULL )
+      {
+      unsigned int c;
+      int all_pass = OK;
+      int all_fail = FAIL;
+
+      smtp_printf("353 PRDR content analysis beginning\r\n");
+      /* Loop through recipients, responses must be in same order received */
+      for (c = 0; recipients_count > c; c++)
+        {
+    uschar * addr= recipients_list[c].address;
+    uschar * msg= US"PRDR R=<%s> %s";
+    uschar * code;
+        DEBUG(D_receive)
+          debug_printf("PRDR processing recipient %s (%d of %d)\n",
+                       addr, c+1, recipients_count);
+        rc = acl_check(ACL_WHERE_PRDR, addr,
+                       acl_smtp_data_prdr, &user_msg, &log_msg);
+
+        /* If any recipient rejected content, indicate it in final message */
+        all_pass |= rc;
+        /* If all recipients rejected, indicate in final message */
+        all_fail &= rc;
+
+        switch (rc)
+          {
+          case OK: case DISCARD: code = US"250"; break;
+          case DEFER:            code = US"450"; break;
+          default:               code = US"550"; break;
+          }
+    if (user_msg != NULL)
+      smtp_user_msg(code, user_msg);
+    else
+      {
+      switch (rc)
+            {
+            case OK: case DISCARD:
+              msg = string_sprintf(CS msg, addr, "acceptance");        break;
+            case DEFER:
+              msg = string_sprintf(CS msg, addr, "temporary refusal"); break;
+            default:
+              msg = string_sprintf(CS msg, addr, "refusal");           break;
+            }
+          smtp_user_msg(code, msg);
+      }
+    if (log_msg)       log_write(0, LOG_MAIN, "PRDR %s %s", addr, log_msg);
+    else if (user_msg) log_write(0, LOG_MAIN, "PRDR %s %s", addr, user_msg);
+    else               log_write(0, LOG_MAIN, CS msg);
+
+    if (rc != OK) { receive_remove_recipient(addr); c--; }
+        }
+      /* Set up final message, used if data acl gives OK */
+      smtp_reply = string_sprintf("%s id=%s message %s",
+               all_fail == FAIL ? US"550" : US"250",
+               message_id,
+                       all_fail == FAIL
+                 ? US"rejected for all recipients"
+             : all_pass == OK
+               ? US"accepted"
+               : US"accepted for some recipients");
+      if (recipients_count == 0)
+        {
+        message_id[0] = 0;       /* Indicate no message accepted */
+    goto TIDYUP;
+    }
+      }
+    else
+      prdr_requested = FALSE;
+#endif /* EXPERIMENTAL_PRDR */
+
     /* Check the recipients count again, as the MIME ACL might have changed
     them. */


@@ -3615,6 +3714,11 @@ if (sender_host_authenticated != NULL)
     }
   }


+#ifdef EXPERIMENTAL_PRDR
+if (prdr_requested)
+ s = string_append(s, &size, &sptr, 1, US" PRDR");
+#endif
+
sprintf(CS big_buffer, "%d", msg_size);
s = string_append(s, &size, &sptr, 2, US" S=", big_buffer);

@@ -3831,7 +3935,11 @@ if(cutthrough_fd >= 0)
     }
   }


-if(smtp_reply == NULL)
+if(smtp_reply == NULL
+#ifdef EXPERIMENTAL_PRDR
+                     || prdr_requested
+#endif
+  )
   {
   log_write(0, LOG_MAIN |
     (((log_extra_selector & LX_received_recipients) != 0)? LOG_RECIPIENTS : 0) |
diff --git a/src/src/smtp_in.c b/src/src/smtp_in.c
index 243b8f7..cb1a869 100644
--- a/src/src/smtp_in.c
+++ b/src/src/smtp_in.c
@@ -210,7 +210,10 @@ static uschar *protocols[] = {
 /* Sanity check and validate optional args to MAIL FROM: envelope */
 enum {
   ENV_MAIL_OPT_SIZE, ENV_MAIL_OPT_BODY, ENV_MAIL_OPT_AUTH,
-  ENV_MAIL_OPT_PRDR, ENV_MAIL_OPT_NULL
+#ifdef EXPERIMENTAL_PRDR
+  ENV_MAIL_OPT_PRDR,
+#endif
+  ENV_MAIL_OPT_NULL
   };
 typedef struct {
   uschar *   name;  /* option requested during MAIL cmd */
@@ -222,7 +225,10 @@ static env_mail_type_t env_mail_type_list[] = {
     { US"SIZE",   ENV_MAIL_OPT_SIZE,   TRUE  },
     { US"BODY",   ENV_MAIL_OPT_BODY,   TRUE  },
     { US"AUTH",   ENV_MAIL_OPT_AUTH,   TRUE  },
-    { US"NULL",   ENV_MAIL_OPT_NULL,   FALSE }  /* Placeholder for ending */
+#ifdef EXPERIMENTAL_PRDR
+    { US"PRDR",   ENV_MAIL_OPT_PRDR,   FALSE },
+#endif
+    { US"NULL",   ENV_MAIL_OPT_NULL,   FALSE }
   };


/* When reading SMTP from a remote host, we have to use our own versions of the
@@ -998,19 +1004,23 @@ uschar *n;
uschar *v = smtp_cmd_data + Ustrlen(smtp_cmd_data) - 1;
while (isspace(*v)) v--;
v[1] = 0;
-
while (v > smtp_cmd_data && *v != '=' && !isspace(*v)) v--;
-if (*v != '=') return FALSE;

 n = v;
-while(isalpha(n[-1])) n--;
-
-/* RFC says SP, but TAB seen in wild and other major MTAs accept it */
-if (!isspace(n[-1])) return FALSE;
-
-n[-1] = 0;
-*name = n;
+if (*v == '=')
+{
+  while(isalpha(n[-1])) n--;
+  /* RFC says SP, but TAB seen in wild and other major MTAs accept it */
+  if (!isspace(n[-1])) return FALSE;
+  n[-1] = 0;
+}
+else
+{
+  n++;
+  if (v == smtp_cmd_data) return FALSE;
+}
 *v++ = 0;
+*name = n;
 *value = v;
 return TRUE;
 }
@@ -2201,6 +2211,9 @@ uschar *what =
 #endif
   (where == ACL_WHERE_PREDATA)? US"DATA" :
   (where == ACL_WHERE_DATA)? US"after DATA" :
+#ifdef EXPERIMENTAL_PRDR
+  (where == ACL_WHERE_PRDR)? US"after DATA PRDR" :
+#endif
   (smtp_cmd_data == NULL)?
     string_sprintf("%s in \"connect\" ACL", acl_wherenames[where]) :
     string_sprintf("%s %s", acl_wherenames[where], smtp_cmd_data);
@@ -3119,6 +3132,7 @@ while (done <= 0)
         pipelining_advertised = TRUE;
         }


+
       /* If any server authentication mechanisms are configured, advertise
       them if the current host is in auth_advertise_hosts. The problem with
       advertising always is that some clients then require users to
@@ -3177,6 +3191,14 @@ while (done <= 0)
         }
       #endif


+      #ifdef EXPERIMENTAL_PRDR
+      /* Per Recipient Data Response, draft by Eric A. Hall extending RFC */
+      if (prdr_enable) {
+        s = string_cat(s, &size, &ptr, smtp_code, 3);
+        s = string_cat(s, &size, &ptr, US"-PRDR\r\n", 7);
+      }
+      #endif
+
       /* Finish off the multiline reply with one that is always available. */


       s = string_cat(s, &size, &ptr, smtp_code, 3);
@@ -3293,17 +3315,12 @@ while (done <= 0)
         }
       if (mail_args->need_value && strcmpic(value, US"") == 0)
         break;
-      /* This doesn't seem right to use
-        if ((char *)mail_args >= (char *)env_mail_type_list + sizeof(env_mail_type_list))
-        goto BAD_MAIL_ARGS;
-      */


       switch(mail_args->value)
         {
         /* Handle SIZE= by reading the value. We don't do the check till later,
         in order to be able to log the sender address on failure. */
         case ENV_MAIL_OPT_SIZE:
-          /* if (strcmpic(name, US"SIZE") == 0 && */
           if (((size = Ustrtoul(value, &end, 10)), *end == 0))
             {
             if ((size == ULONG_MAX && errno == ERANGE) || size > INT_MAX)
@@ -3355,8 +3372,8 @@ while (done <= 0)
             if (auth_xtextdecode(value, &authenticated_sender) < 0)
               {
               /* Put back terminator overrides for error message */
-              name[-1] = ' ';
               value[-1] = '=';
+              name[-1] = ' ';
               done = synprot_error(L_smtp_syntax_error, 501, NULL,
                 US"invalid data for AUTH");
               goto COMMAND_LOOP;
@@ -3399,22 +3416,30 @@ while (done <= 0)
               overrides for error message */


               default:
-              name[-1] = ' ';
               value[-1] = '=';
+              name[-1] = ' ';
               (void)smtp_handle_acl_fail(ACL_WHERE_MAILAUTH, rc, user_msg,
                 log_msg);
               goto COMMAND_LOOP;
               }
             }
             break;
- 
+
+#ifdef EXPERIMENTAL_PRDR
+        case ENV_MAIL_OPT_PRDR:
+          if ( prdr_enable )
+            prdr_requested = TRUE;
+          break;
+#endif
+
         /* Unknown option. Stick back the terminator characters and break
-        the loop. An error for a malformed address will occur. */
+        the loop.  Do the name-terminator second as extract_option sets
+    value==name when it found no equal-sign.
+    An error for a malformed address will occur. */
         default:
-
-          /* BAD_MAIL_ARGS: */
-          name[-1] = ' ';
           value[-1] = '=';
+          name[-1] = ' ';
+          arg_error = TRUE;
           break;
         }
       /* Break out of for loop if switch() had bad argument or
@@ -3536,8 +3561,21 @@ while (done <= 0)


     if (rc == OK || rc == DISCARD)
       {
-      if (user_msg == NULL) smtp_printf("250 OK\r\n");
-        else smtp_user_msg(US"250", user_msg);
+      if (user_msg == NULL) 
+        smtp_printf("%s%s%s", US"250 OK",
+                  #ifdef EXPERIMENTAL_PRDR
+                    prdr_requested == TRUE ? US", PRDR Requested" :
+                  #endif
+                    US"",
+                    US"\r\n");
+      else 
+        {
+      #ifdef EXPERIMENTAL_PRDR
+        if ( prdr_requested == TRUE )
+           user_msg = string_sprintf("%s%s", user_msg, US", PRDR Requested");
+      #endif
+        smtp_user_msg(US"250",user_msg);
+        }
       smtp_delay_rcpt = smtp_rlr_base;
       recipients_discarded = (rc == DISCARD);
       was_rej_mail = FALSE;
@@ -3801,9 +3839,11 @@ while (done <= 0)


     if (rc == OK)
       {
+      uschar * code;
+      code = US"354";
       if (user_msg == NULL)
-        smtp_printf("354 Enter message, ending with \".\" on a line by itself\r\n");
-      else smtp_user_msg(US"354", user_msg);
+        smtp_printf("%s Enter message, ending with \".\" on a line by itself\r\n", code);
+      else smtp_user_msg(code, user_msg);
       done = 3;
       message_ended = END_NOTENDED;   /* Indicate in middle of data */
       }
diff --git a/src/src/structs.h b/src/src/structs.h
index 5fc01e9..d11e91a 100644
--- a/src/src/structs.h
+++ b/src/src/structs.h
@@ -483,6 +483,10 @@ typedef struct address_item_propagated {
 #define af_pass_message        0x02000000 /* pass message in bounces */
 #define af_bad_reply           0x04000000 /* filter could not generate autoreply */


+#ifdef EXPERIMENTAL_PRDR
+# define af_prdr_used          0x08000000 /* delivery used SMTP PRDR */
+#endif
+
 /* These flags must be propagated when a child is created */


 #define af_propagate           (af_ignore_error)
diff --git a/src/src/transports/smtp.c b/src/src/transports/smtp.c
index 6c35076..ee260a1 100644
--- a/src/src/transports/smtp.c
+++ b/src/src/transports/smtp.c
@@ -106,6 +106,10 @@ optionlist smtp_transport_options[] = {
 #endif
   { "hosts_try_auth",       opt_stringptr,
       (void *)offsetof(smtp_transport_options_block, hosts_try_auth) },
+#ifdef EXPERIMENTAL_PRDR
+  { "hosts_try_prdr",       opt_stringptr,
+      (void *)offsetof(smtp_transport_options_block, hosts_try_prdr) },
+#endif
 #ifdef SUPPORT_TLS
   { "hosts_verify_avoid_tls", opt_stringptr,
       (void *)offsetof(smtp_transport_options_block, hosts_verify_avoid_tls) },
@@ -172,6 +176,9 @@ smtp_transport_options_block smtp_transport_option_defaults = {
   NULL,                /* serialize_hosts */
   NULL,                /* hosts_try_auth */
   NULL,                /* hosts_require_auth */
+#ifdef EXPERIMENTAL_PRDR
+  NULL,                /* hosts_try_prdr */
+#endif
   NULL,                /* hosts_require_tls */
   NULL,                /* hosts_avoid_tls */
   US"*",               /* hosts_verify_avoid_tls */
@@ -871,6 +878,10 @@ BOOL completed_address = FALSE;
 BOOL esmtp = TRUE;
 BOOL pending_MAIL;
 BOOL pass_message = FALSE;
+#ifdef EXPERIMENTAL_PRDR
+BOOL prdr_offered = FALSE;
+BOOL prdr_active;
+#endif
 smtp_inblock inblock;
 smtp_outblock outblock;
 int max_rcpt = tblock->max_addresses;
@@ -1066,6 +1077,17 @@ goto SEND_QUIT;
     pcre_exec(regex_STARTTLS, NULL, CS buffer, Ustrlen(buffer), 0,
       PCRE_EOPT, NULL, 0) >= 0;
   #endif
+
+  #ifdef EXPERIMENTAL_PRDR
+  prdr_offered = esmtp &&
+    (pcre_exec(regex_PRDR, NULL, CS buffer, Ustrlen(buffer), 0,
+      PCRE_EOPT, NULL, 0) >= 0) &&
+    (verify_check_this_host(&(ob->hosts_try_prdr), NULL, host->name,
+      host->address, NULL) == OK);
+
+  if (prdr_offered)
+    {DEBUG(D_transport) debug_printf("PRDR usable\n");}
+  #endif
   }


 /* For continuing deliveries down the same channel, the socket is the standard
@@ -1266,6 +1288,17 @@ if (continue_hostname == NULL
   DEBUG(D_transport) debug_printf("%susing PIPELINING\n",
     smtp_use_pipelining? "" : "not ");


+#ifdef EXPERIMENTAL_PRDR
+  prdr_offered = esmtp &&
+    pcre_exec(regex_PRDR, NULL, CS buffer, Ustrlen(CS buffer), 0,
+      PCRE_EOPT, NULL, 0) >= 0 &&
+    verify_check_this_host(&(ob->hosts_try_prdr), NULL, host->name,
+      host->address, NULL) == OK;
+
+  if (prdr_offered)
+    {DEBUG(D_transport) debug_printf("PRDR usable\n");}
+#endif
+
   /* Note if the response to EHLO specifies support for the AUTH extension.
   If it has, check that this host is one we want to authenticate to, and do
   the business. The host name and address must be available when the
@@ -1469,6 +1502,26 @@ if (smtp_use_size)
   while (*p) p++;
   }


+#ifdef EXPERIMENTAL_PRDR
+prdr_active = FALSE;
+if (prdr_offered)
+  {
+  for (addr = first_addr; addr; addr = addr->next)
+    if (addr->transport_return == PENDING_DEFER)
+      {
+      for (addr = addr->next; addr; addr = addr->next)
+        if (addr->transport_return == PENDING_DEFER)
+      {            /* at least two recipients to send */
+      prdr_active = TRUE;
+      sprintf(CS p, " PRDR"); p += 5;
+      goto prdr_is_active;
+      }
+      break;
+      }
+  }
+prdr_is_active:
+#endif
+
 /* If an authenticated_sender override has been specified for this transport
 instance, expand it. If the expansion is forced to fail, and there was already
 an authenticated_sender for this message, the original value will be used.
@@ -1709,8 +1762,31 @@ if (!ok) ok = TRUE; else


smtp_command = US"end of data";

-  /* For SMTP, we now read a single response that applies to the whole message.
-  If it is OK, then all the addresses have been delivered. */
+#ifdef EXPERIMENTAL_PRDR
+  /* For PRDR we optionally get a partial-responses warning
+   * followed by the individual responses, before going on with
+   * the overall response.  If we don't get the warning then deal
+   * with per non-PRDR. */
+  if(prdr_active)
+    {
+    ok = smtp_read_response(&inblock, buffer, sizeof(buffer), '3',
+      ob->final_timeout);
+    if (!ok && errno == 0)
+      switch(buffer[0])
+        {
+    case '2': prdr_active = FALSE;
+              ok = TRUE;
+          break;
+    case '4': errno = ERRNO_DATA4XX;
+                  addrlist->more_errno |= ((buffer[1] - '0')*10 + buffer[2] - '0') << 8;
+          break;
+        }
+    }
+  else
+#endif
+
+  /* For non-PRDR SMTP, we now read a single response that applies to the
+  whole message.  If it is OK, then all the addresses have been delivered. */


   if (!lmtp)
     {
@@ -1764,7 +1840,7 @@ if (!ok) ok = TRUE; else
       conf = (s == buffer)? (uschar *)string_copy(s) : s;
       }


-    /* Process all transported addresses - for LMTP, read a status for
+    /* Process all transported addresses - for LMTP or PRDR, read a status for
     each one. */


     for (addr = addrlist; addr != first_addr; addr = addr->next)
@@ -1776,13 +1852,22 @@ if (!ok) ok = TRUE; else
       address. For temporary errors, add a retry item for the address so that
       it doesn't get tried again too soon. */


+#ifdef EXPERIMENTAL_PRDR
+      if (lmtp || prdr_active)
+#else
       if (lmtp)
+#endif
         {
         if (!smtp_read_response(&inblock, buffer, sizeof(buffer), '2',
             ob->final_timeout))
           {
           if (errno != 0 || buffer[0] == 0) goto RESPONSE_FAILED;
-          addr->message = string_sprintf("LMTP error after %s: %s",
+          addr->message = string_sprintf(
+#ifdef EXPERIMENTAL_PRDR
+        "%s error after %s: %s", prdr_active ? "PRDR":"LMTP",
+#else
+        "LMTP error after %s: %s",
+#endif
             big_buffer, string_printing(buffer));
           setflag(addr, af_pass_message);   /* Allow message to go to user */
           if (buffer[0] == '5')
@@ -1792,7 +1877,10 @@ if (!ok) ok = TRUE; else
             errno = ERRNO_DATA4XX;
             addr->more_errno |= ((buffer[1] - '0')*10 + buffer[2] - '0') << 8;
             addr->transport_return = DEFER;
-            retry_add_item(addr, addr->address_retry_key, 0);
+#ifdef EXPERIMENTAL_PRDR
+            if (!prdr_active)
+#endif
+              retry_add_item(addr, addr->address_retry_key, 0);
             }
           continue;
           }
@@ -1812,25 +1900,73 @@ if (!ok) ok = TRUE; else
       addr->host_used = thost;
       addr->special_action = flag;
       addr->message = conf;
+#ifdef EXPERIMENTAL_PRDR
+      if (prdr_active) addr->flags |= af_prdr_used;
+#endif
       flag = '-';


-      /* Update the journal. For homonymic addresses, use the base address plus
-      the transport name. See lots of comments in deliver.c about the reasons
-      for the complications when homonyms are involved. Just carry on after
-      write error, as it may prove possible to update the spool file later. */
-
-      if (testflag(addr, af_homonym))
-        sprintf(CS buffer, "%.500s/%s\n", addr->unique + 3, tblock->name);
-      else
-        sprintf(CS buffer, "%.500s\n", addr->unique);
-
-      DEBUG(D_deliver) debug_printf("journalling %s", buffer);
-      len = Ustrlen(CS buffer);
-      if (write(journal_fd, buffer, len) != len)
-        log_write(0, LOG_MAIN|LOG_PANIC, "failed to write journal for "
-          "%s: %s", buffer, strerror(errno));
+#ifdef EXPERIMENTAL_PRDR
+      if (!prdr_active)
+#endif
+        {
+        /* Update the journal. For homonymic addresses, use the base address plus
+        the transport name. See lots of comments in deliver.c about the reasons
+        for the complications when homonyms are involved. Just carry on after
+        write error, as it may prove possible to update the spool file later. */
+  
+        if (testflag(addr, af_homonym))
+          sprintf(CS buffer, "%.500s/%s\n", addr->unique + 3, tblock->name);
+        else
+          sprintf(CS buffer, "%.500s\n", addr->unique);
+  
+        DEBUG(D_deliver) debug_printf("journalling %s", buffer);
+        len = Ustrlen(CS buffer);
+        if (write(journal_fd, buffer, len) != len)
+          log_write(0, LOG_MAIN|LOG_PANIC, "failed to write journal for "
+            "%s: %s", buffer, strerror(errno));
+        }
       }


+#ifdef EXPERIMENTAL_PRDR
+      if (prdr_active)
+        {
+    /* PRDR - get the final, overall response.  For any non-success
+    upgrade all the address statuses. */
+        ok = smtp_read_response(&inblock, buffer, sizeof(buffer), '2',
+          ob->final_timeout);
+        if (!ok)
+      {
+      if(errno == 0 && buffer[0] == '4')
+            {
+            errno = ERRNO_DATA4XX;
+            addrlist->more_errno |= ((buffer[1] - '0')*10 + buffer[2] - '0') << 8;
+            }
+      for (addr = addrlist; addr != first_addr; addr = addr->next)
+            if (buffer[0] == '5' || addr->transport_return == OK)
+              addr->transport_return = PENDING_OK; /* allow set_errno action */
+      goto RESPONSE_FAILED;
+      }
+
+    /* Update the journal, or setup retry. */
+        for (addr = addrlist; addr != first_addr; addr = addr->next)
+      if (addr->transport_return == OK)
+      {
+          if (testflag(addr, af_homonym))
+            sprintf(CS buffer, "%.500s/%s\n", addr->unique + 3, tblock->name);
+          else
+            sprintf(CS buffer, "%.500s\n", addr->unique);
+  
+          DEBUG(D_deliver) debug_printf("journalling(PRDR) %s", buffer);
+          len = Ustrlen(CS buffer);
+          if (write(journal_fd, buffer, len) != len)
+            log_write(0, LOG_MAIN|LOG_PANIC, "failed to write journal for "
+              "%s: %s", buffer, strerror(errno));
+      }
+    else if (addr->transport_return == DEFER)
+          retry_add_item(addr, addr->address_retry_key, -2);
+    }
+#endif
+
     /* Ensure the journal file is pushed out to disk. */


     if (EXIMfsync(journal_fd) < 0)
diff --git a/src/src/transports/smtp.h b/src/src/transports/smtp.h
index 79f1b8c..ef53292 100644
--- a/src/src/transports/smtp.h
+++ b/src/src/transports/smtp.h
@@ -21,6 +21,9 @@ typedef struct {
   uschar *serialize_hosts;
   uschar *hosts_try_auth;
   uschar *hosts_require_auth;
+#ifdef EXPERIMENTAL_PRDR
+  uschar *hosts_try_prdr;
+#endif
   uschar *hosts_require_tls;
   uschar *hosts_avoid_tls;
   uschar *hosts_verify_avoid_tls;
diff --git a/test/confs/5500 b/test/confs/5500
new file mode 100644
index 0000000..1bc830e
--- /dev/null
+++ b/test/confs/5500
@@ -0,0 +1,66 @@
+# Exim test configuration 5500
+# Server PRDR
+
+LOG_SELECTOR=
+
+exim_path = EXIM_PATH
+host_lookup_order = bydns
+primary_hostname = myhost.test.ex
+rfc1413_query_timeout = 0s
+spool_directory = DIR/spool
+log_file_path = DIR/spool/log/%slog
+gecos_pattern = ""
+gecos_name = CALLER_NAME
+
+# ----- Main settings -----
+
+domainlist local_domains = test.ex : *.test.ex
+
+LOG_SELECTOR
+
+qualify_domain = test.ex
+trusted_users = CALLER
+
+prdr_enable = true
+
+acl_smtp_rcpt = accept
+acl_smtp_data_prdr = prdr_acl
+acl_smtp_data = data_acl
+
+# ----- ACLs -----
+
+begin acl
+
+prdr_acl:
+  defer    local_parts = usery
+  deny    local_parts = userz
+  accept
+
+data_acl:
+  deny    condition = ${if match {$recipients}{userq}}
+  accept
+
+# ----- Transports -----
+
+begin transports
+
+t1:
+  driver = appendfile
+  file = DIR/test-mail/$local_part
+  user = CALLER
+
+# ----- Routers -----
+
+begin routers
+
+r0:
+  driver = accept
+  transport = t1
+
+# ----- Retry -----
+
+begin retry
+
+*                *   F,5d,5m
+
+# End
diff --git a/test/confs/5510 b/test/confs/5510
new file mode 100644
index 0000000..4872421
--- /dev/null
+++ b/test/confs/5510
@@ -0,0 +1,62 @@
+# Exim test configuration 5510
+# Client PRDR
+
+LOG_SELECTOR=
+
+exim_path = EXIM_PATH
+host_lookup_order = bydns
+primary_hostname = myhost.test.ex
+rfc1413_query_timeout = 0s
+spool_directory = DIR/spool
+log_file_path = DIR/spool/log/%slog
+gecos_pattern = ""
+gecos_name = CALLER_NAME
+
+# ----- Main settings -----
+
+domainlist local_domains = test.ex : *.test.ex
+
+LOG_SELECTOR
+
+qualify_domain = test.ex
+trusted_users = CALLER
+
+prdr_enable = true
+
+acl_smtp_rcpt = accept
+acl_smtp_data = data_acl
+
+# ----- ACLs -----
+
+begin acl
+
+data_acl:
+  deny    local_parts = usery
+  accept
+
+# ----- Transports -----
+
+begin transports
+
+t1:
+  driver = smtp
+  hosts = 127.0.0.1
+  port = PORT_S
+  allow_localhost
+  hosts_try_prdr = *
+
+# ----- Routers -----
+
+begin routers
+
+r0:
+  driver = accept
+  transport = t1
+
+# ----- Retry -----
+
+begin retry
+
+*                *   F,5d,5m
+
+# End
diff --git a/test/log/2002 b/test/log/2002
index 4b0512a..7744955 100644
--- a/test/log/2002
+++ b/test/log/2002
@@ -1,10 +1,13 @@
 1999-03-02 09:44:33 exim x.yz daemon started: pid=pppp, no queue runs, listening for SMTP on port 1225
 1999-03-02 09:44:33 10HmaX-0005vi-00 <= CALLER@??? H=[127.0.0.1] P=smtps X=TLS1.x:xxxxRSA_AES_256_CBC_SHAnnn:256 S=sss
+1999-03-02 09:44:33 10HmaY-0005vi-00 <= "name with spaces"@??? H=[127.0.0.1] P=smtps X=TLS1.x:xxxxRSA_AES_256_CBC_SHAnnn:256 S=sss
 1999-03-02 09:44:33 TLS error on connection from (rhu.barb) [ip4.ip4.ip4.ip4] (gnutls_handshake): The peer did not send any certificate.
-1999-03-02 09:44:33 10HmaY-0005vi-00 <= CALLER@??? H=[ip4.ip4.ip4.ip4] P=smtps X=TLS1.x:xxxxRSA_AES_256_CBC_SHAnnn:256 DN="C=UK,O=The Exim Maintainers,OU=Test Suite,CN=Phil Pennock" S=sss
+1999-03-02 09:44:33 10HmaZ-0005vi-00 <= CALLER@??? H=[ip4.ip4.ip4.ip4] P=smtps X=TLS1.x:xxxxRSA_AES_256_CBC_SHAnnn:256 DN="C=UK,O=The Exim Maintainers,OU=Test Suite,CN=Phil Pennock" S=sss
 1999-03-02 09:44:33 Start queue run: pid=pppp -qf
 1999-03-02 09:44:33 10HmaX-0005vi-00 => CALLER <CALLER@???> R=abc T=local_delivery
 1999-03-02 09:44:33 10HmaX-0005vi-00 Completed
 1999-03-02 09:44:33 10HmaY-0005vi-00 => CALLER <CALLER@???> R=abc T=local_delivery
 1999-03-02 09:44:33 10HmaY-0005vi-00 Completed
+1999-03-02 09:44:33 10HmaZ-0005vi-00 => CALLER <CALLER@???> R=abc T=local_delivery
+1999-03-02 09:44:33 10HmaZ-0005vi-00 Completed
 1999-03-02 09:44:33 End queue run: pid=pppp -qf
diff --git a/test/log/2102 b/test/log/2102
index a0d9fc2..da4ee49 100644
--- a/test/log/2102
+++ b/test/log/2102
@@ -1,11 +1,14 @@
 1999-03-02 09:44:33 exim x.yz daemon started: pid=pppp, no queue runs, listening for SMTP on port 1225
 1999-03-02 09:44:33 10HmaX-0005vi-00 <= CALLER@??? H=[127.0.0.1] P=smtps X=TLSv1:AES256-SHA:256 S=sss
+1999-03-02 09:44:33 10HmaY-0005vi-00 <= "name with spaces"@??? H=[127.0.0.1] P=smtps X=TLSv1:AES256-SHA:256 S=sss
 1999-03-02 09:44:33 TLS error on connection from (rhu.barb) [ip4.ip4.ip4.ip4] (SSL_accept): error: <<detail omitted>>
 1999-03-02 09:44:33 TLS client disconnected cleanly (rejected our certificate?)
-1999-03-02 09:44:33 10HmaY-0005vi-00 <= CALLER@??? H=[ip4.ip4.ip4.ip4] P=smtps X=TLSv1:AES256-SHA:256 DN="/C=UK/O=The Exim Maintainers/OU=Test Suite/CN=Phil Pennock" S=sss
+1999-03-02 09:44:33 10HmaZ-0005vi-00 <= CALLER@??? H=[ip4.ip4.ip4.ip4] P=smtps X=TLSv1:AES256-SHA:256 DN="/C=UK/O=The Exim Maintainers/OU=Test Suite/CN=Phil Pennock" S=sss
 1999-03-02 09:44:33 Start queue run: pid=pppp -qf
 1999-03-02 09:44:33 10HmaX-0005vi-00 => CALLER <CALLER@???> R=abc T=local_delivery
 1999-03-02 09:44:33 10HmaX-0005vi-00 Completed
 1999-03-02 09:44:33 10HmaY-0005vi-00 => CALLER <CALLER@???> R=abc T=local_delivery
 1999-03-02 09:44:33 10HmaY-0005vi-00 Completed
+1999-03-02 09:44:33 10HmaZ-0005vi-00 => CALLER <CALLER@???> R=abc T=local_delivery
+1999-03-02 09:44:33 10HmaZ-0005vi-00 Completed
 1999-03-02 09:44:33 End queue run: pid=pppp -qf
diff --git a/test/log/5500 b/test/log/5500
new file mode 100644
index 0000000..ef5372c
--- /dev/null
+++ b/test/log/5500
@@ -0,0 +1,17 @@
+1999-03-02 09:44:33 exim x.yz daemon started: pid=pppp, no queue runs, listening for SMTP on port 1225
+1999-03-02 09:44:33 10HmaY-0005vi-00 PRDR R=<userx@???> acceptance
+1999-03-02 09:44:33 10HmaY-0005vi-00 PRDR R=<usery@???> temporary refusal
+1999-03-02 09:44:33 10HmaY-0005vi-00 PRDR R=<userz@???> refusal
+1999-03-02 09:44:33 10HmaY-0005vi-00 <= <> H=(rhu.barb) [127.0.0.1] P=esmtp PRDR S=sss
+1999-03-02 09:44:33 10HmaY-0005vi-00 => userx <userx@???> R=r0 T=t1
+1999-03-02 09:44:33 10HmaY-0005vi-00 Completed
+1999-03-02 09:44:33 10HmaX-0005vi-00 PRDR R=<userp@???> acceptance
+1999-03-02 09:44:33 10HmaX-0005vi-00 PRDR R=<userq@???> acceptance
+1999-03-02 09:44:33 10HmaX-0005vi-00 H=(rhu.barb) [127.0.0.1] F=<> rejected after DATA
+1999-03-02 09:44:33 10HmaZ-0005vi-00 <= <> H=(rhu.barb) [127.0.0.1] P=esmtp S=sss
+1999-03-02 09:44:33 10HmaZ-0005vi-00 => user1 <user1@???> R=r0 T=t1
+1999-03-02 09:44:33 10HmaZ-0005vi-00 Completed
+1999-03-02 09:44:33 10HmbA-0005vi-00 PRDR R=<usery@???> temporary refusal
+1999-03-02 09:44:33 10HmbA-0005vi-00 PRDR R=<usery@???> temporary refusal
+1999-03-02 09:44:33 10HmbB-0005vi-00 PRDR R=<userz@???> refusal
+1999-03-02 09:44:33 10HmbB-0005vi-00 PRDR R=<userz@???> refusal
diff --git a/test/log/5510 b/test/log/5510
new file mode 100644
index 0000000..86a9bab
--- /dev/null
+++ b/test/log/5510
@@ -0,0 +1,31 @@
+1999-03-02 09:44:33 10HmaX-0005vi-00 <= userx@??? U=CALLER P=local S=sss
+1999-03-02 09:44:33 10HmaX-0005vi-00 => usery@??? R=r0 T=t1 H=127.0.0.1 [127.0.0.1] PRDR C="250 first rcpt was good"
+1999-03-02 09:44:33 10HmaX-0005vi-00 -> userz@??? R=r0 T=t1 H=127.0.0.1 [127.0.0.1] PRDR C="250 second rcpt was good"
+1999-03-02 09:44:33 10HmaX-0005vi-00 Completed
+1999-03-02 09:44:33 10HmaY-0005vi-00 <= userx@??? U=CALLER P=local S=sss
+1999-03-02 09:44:33 10HmaY-0005vi-00 => user2.1@??? R=r0 T=t1 H=127.0.0.1 [127.0.0.1] C="250 OK got that"
+1999-03-02 09:44:33 10HmaY-0005vi-00 -> user2.2@??? R=r0 T=t1 H=127.0.0.1 [127.0.0.1] C="250 OK got that"
+1999-03-02 09:44:33 10HmaY-0005vi-00 Completed
+1999-03-02 09:44:33 10HmaZ-0005vi-00 <= userx@??? U=CALLER P=local S=sss
+1999-03-02 09:44:33 10HmaZ-0005vi-00 => usery@??? R=r0 T=t1 H=127.0.0.1 [127.0.0.1] PRDR C="250 first rcpt was good"
+1999-03-02 09:44:33 10HmaZ-0005vi-00 == userz@??? R=r0 T=t1 defer (0): PRDR error after DATA: 450 cannot handle second rcpt right now
+1999-03-02 09:44:33 10HmbA-0005vi-00 <= <> U=CALLER P=local S=sss
+1999-03-02 09:44:33 10HmbA-0005vi-00 => userp@??? R=r0 T=t1 H=127.0.0.1 [127.0.0.1] PRDR C="250 first rcpt was good"
+1999-03-02 09:44:33 10HmbA-0005vi-00 ** userq@??? R=r0 T=t1: PRDR error after DATA: 550 second rcpt does not like content
+1999-03-02 09:44:33 10HmbA-0005vi-00 Frozen (delivery error message)
+1999-03-02 09:44:33 10HmaZ-0005vi-00 == userz@??? routing defer (-51): retry time not reached
+1999-03-02 09:44:33 10HmbB-0005vi-00 <= <> U=CALLER P=local S=sss
+1999-03-02 09:44:33 10HmbB-0005vi-00 ** user5.1@??? R=r0 T=t1 H=127.0.0.1 [127.0.0.1]: SMTP error from remote mail server after end of data: host 127.0.0.1 [127.0.0.1]: 550 oops, overall rejection
+1999-03-02 09:44:33 10HmbB-0005vi-00 ** user5.2@??? R=r0 T=t1 H=127.0.0.1 [127.0.0.1]: SMTP error from remote mail server after end of data: host 127.0.0.1 [127.0.0.1]: 550 oops, overall rejection
+1999-03-02 09:44:33 10HmbB-0005vi-00 Frozen (delivery error message)
+1999-03-02 09:44:33 10HmbC-0005vi-00 <= <> U=CALLER P=local S=sss
+1999-03-02 09:44:33 10HmbC-0005vi-00 ** user6.1@??? R=r0 T=t1: SMTP error from remote mail server after end of data: host 127.0.0.1 [127.0.0.1]: 550 naah mate
+1999-03-02 09:44:33 10HmbC-0005vi-00 ** user6.2@??? R=r0 T=t1: SMTP error from remote mail server after end of data: host 127.0.0.1 [127.0.0.1]: 550 naah mate
+1999-03-02 09:44:33 10HmbC-0005vi-00 Frozen (delivery error message)
+1999-03-02 09:44:33 10HmbD-0005vi-00 <= <> U=CALLER P=local S=sss
+1999-03-02 09:44:33 10HmbD-0005vi-00 == user7.1@??? R=r0 T=t1 defer (-46): SMTP error from remote mail server after end of data: host 127.0.0.1 [127.0.0.1]: 450 oops, try again later please
+1999-03-02 09:44:33 10HmbD-0005vi-00 == user7.2@??? R=r0 T=t1 defer (-46): SMTP error from remote mail server after end of data: host 127.0.0.1 [127.0.0.1]: 450 oops, try again later please
+1999-03-02 09:44:33 10HmbD-0005vi-00 == user7.3@??? R=r0 T=t1 defer (-46): SMTP error from remote mail server after end of data: host 127.0.0.1 [127.0.0.1]: 450 oops, try again later please
+1999-03-02 09:44:33 10HmbE-0005vi-00 <= <> U=CALLER P=local S=sss
+1999-03-02 09:44:33 10HmbE-0005vi-00 => user8.1@??? R=r0 T=t1 H=127.0.0.1 [127.0.0.1] C="250 OK, got that"
+1999-03-02 09:44:33 10HmbE-0005vi-00 Completed
diff --git a/test/mail/2002.CALLER b/test/mail/2002.CALLER
index cc606bb..a4e0dd5 100644
--- a/test/mail/2002.CALLER
+++ b/test/mail/2002.CALLER
@@ -10,12 +10,24 @@ TLS: cipher=TLS1.x:xxxxRSA_AES_256_CBC_SHAnnn:256 peerdn=


This is a test encrypted message.

+From "name with spaces"@??? Tue Mar 02 09:44:33 1999
+Received: from [127.0.0.1]
+    by myhost.test.ex with smtps (TLS1.x:xxxxRSA_AES_256_CBC_SHAnnn:256)
+    (Exim x.yz)
+    (envelope-from <"name with spaces"@???>)
+    id 10HmaY-0005vi-00
+    for CALLER@???; Tue, 2 Mar 1999 09:44:33 +0000
+tls-certificate-verified: 0
+TLS: cipher=TLS1.x:xxxxRSA_AES_256_CBC_SHAnnn:256 peerdn=
+
+This is a test encrypted message.
+
 From CALLER@??? Tue Mar 02 09:44:33 1999
 Received: from [ip4.ip4.ip4.ip4]
     by myhost.test.ex with smtps (TLS1.x:xxxxRSA_AES_256_CBC_SHAnnn:256)
     (Exim x.yz)
     (envelope-from <CALLER@???>)
-    id 10HmaY-0005vi-00
+    id 10HmaZ-0005vi-00
     for CALLER@???; Tue, 2 Mar 1999 09:44:33 +0000
 tls-certificate-verified: 1
 TLS: cipher=TLS1.x:xxxxRSA_AES_256_CBC_SHAnnn:256 peerdn=C=UK,O=The Exim Maintainers,OU=Test Suite,CN=Phil Pennock
diff --git a/test/mail/2102.CALLER b/test/mail/2102.CALLER
index 0a2adcf..e4be6a3 100644
--- a/test/mail/2102.CALLER
+++ b/test/mail/2102.CALLER
@@ -10,12 +10,24 @@ TLS: cipher=TLSv1:AES256-SHA:256 peerdn=


This is a test encrypted message.

+From "name with spaces"@??? Tue Mar 02 09:44:33 1999
+Received: from [127.0.0.1]
+    by myhost.test.ex with smtps (TLSv1:AES256-SHA:256)
+    (Exim x.yz)
+    (envelope-from <"name with spaces"@???>)
+    id 10HmaY-0005vi-00
+    for CALLER@???; Tue, 2 Mar 1999 09:44:33 +0000
+tls-certificate-verified: 0
+TLS: cipher=TLSv1:AES256-SHA:256 peerdn=
+
+This is a test encrypted message.
+
 From CALLER@??? Tue Mar 02 09:44:33 1999
 Received: from [ip4.ip4.ip4.ip4]
     by myhost.test.ex with smtps (TLSv1:AES256-SHA:256)
     (Exim x.yz)
     (envelope-from <CALLER@???>)
-    id 10HmaY-0005vi-00
+    id 10HmaZ-0005vi-00
     for CALLER@???; Tue, 2 Mar 1999 09:44:33 +0000
 tls-certificate-verified: 1
 TLS: cipher=TLSv1:AES256-SHA:256 peerdn=/C=UK/O=The Exim Maintainers/OU=Test Suite/CN=Phil Pennock
diff --git a/test/mail/5500.user1 b/test/mail/5500.user1
new file mode 100644
index 0000000..a485c7c
--- /dev/null
+++ b/test/mail/5500.user1
@@ -0,0 +1,8 @@
+From MAILER-DAEMON Tue Mar 02 09:44:33 1999
+Received: from [127.0.0.1] (helo=rhu.barb)
+    by myhost.test.ex with esmtp (Exim x.yz)
+    id 10HmaZ-0005vi-00
+    for user1@???; Tue, 2 Mar 1999 09:44:33 +0000
+Sender: sender@???
+
+
diff --git a/test/mail/5500.userx b/test/mail/5500.userx
new file mode 100644
index 0000000..c46897f
--- /dev/null
+++ b/test/mail/5500.userx
@@ -0,0 +1,7 @@
+From MAILER-DAEMON Tue Mar 02 09:44:33 1999
+Received: from [127.0.0.1] (helo=rhu.barb)
+    by myhost.test.ex with esmtp (Exim x.yz)
+    id 10HmaY-0005vi-00; Tue, 2 Mar 1999 09:44:33 +0000
+Sender: sender@???
+
+
diff --git a/test/rejectlog/5500 b/test/rejectlog/5500
new file mode 100644
index 0000000..89372dc
--- /dev/null
+++ b/test/rejectlog/5500
@@ -0,0 +1,8 @@
+1999-03-02 09:44:33 10HmaX-0005vi-00 H=(rhu.barb) [127.0.0.1] F=<> rejected after DATA
+Envelope-from: <>
+Envelope-to: <userp@???>
+    <userq@???>
+P Received: from [127.0.0.1] (helo=rhu.barb)
+    by myhost.test.ex with esmtp (Exim x.yz)
+    id 10HmaX-0005vi-00; Tue, 2 Mar 1999 09:44:33 +0000
+S Sender: sender@???
diff --git a/test/scripts/0000-Basic/0121 b/test/scripts/0000-Basic/0121
index 4bcb99b..9ff68fa 100644
--- a/test/scripts/0000-Basic/0121
+++ b/test/scripts/0000-Basic/0121
@@ -6,6 +6,9 @@ rset
 mail from:<userx@???>
 rcpt to:<userx@???>
 rset
+mail from:<"unknown with spaces"@???>
+rcpt to:<userx@???>
+rset
 mail from:<userx@???>
 rcpt to:<userx@???>
 data
diff --git a/test/scripts/2000-GnuTLS/2002 b/test/scripts/2000-GnuTLS/2002
index 06e1a82..06a7b31 100644
--- a/test/scripts/2000-GnuTLS/2002
+++ b/test/scripts/2000-GnuTLS/2002
@@ -25,6 +25,29 @@ This is a test encrypted message.
 quit
 ??? 221
 ****
+client-gnutls 127.0.0.1 PORT_D
+??? 220
+ehlo rhu.barb
+??? 250-
+??? 250-
+??? 250-
+??? 250-
+??? 250-
+??? 250
+starttls
+??? 220
+mail from:<"name with spaces"@???>
+??? 250
+rcpt to:<CALLER@???>
+??? 250
+DATA
+??? 3
+This is a test encrypted message.
+.
+??? 250
+quit
+??? 221
+****
 client-gnutls HOSTIPV4 PORT_D
 ??? 220
 ehlo rhu.barb
diff --git a/test/scripts/2100-OpenSSL/2102 b/test/scripts/2100-OpenSSL/2102
index 7f9279a..2e7dca0 100644
--- a/test/scripts/2100-OpenSSL/2102
+++ b/test/scripts/2100-OpenSSL/2102
@@ -24,6 +24,29 @@ This is a test encrypted message.
 quit
 ??? 221
 ****
+client-ssl 127.0.0.1 PORT_D
+??? 220
+ehlo rhu.barb
+??? 250-
+??? 250-
+??? 250-
+??? 250-
+??? 250-
+??? 250
+starttls
+??? 220
+mail from:<"name with spaces"@???>
+??? 250
+rcpt to:<CALLER@???>
+??? 250
+DATA
+??? 3
+This is a test encrypted message.
+.
+??? 250
+quit
+??? 221
+****
 client-ssl HOSTIPV4 PORT_D
 ??? 220
 ehlo rhu.barb
diff --git a/test/scripts/5500-PRDR/5500 b/test/scripts/5500-PRDR/5500
new file mode 100644
index 0000000..567b000
--- /dev/null
+++ b/test/scripts/5500-PRDR/5500
@@ -0,0 +1,155 @@
+# PRDR (Per-Recipient Data Responses) server
+need_ipv4
+no_msglog_check
+#
+# 1: userx should be accepted, y should be tmp-rejected,
+#    z rejected, all after data per PRDR spec
+exim -DSERVER=server -bd -oX PORT_D
+****
+client 127.0.0.1 PORT_D
+??? 220
+ehlo rhu.barb
+??? 250-
+??? 250-
+??? 250-
+??? 250-
+??? 250-PRDR
+??? 250
+mail from:<> PRDR
+??? 250
+rcpt to:<userx@???>
+??? 250
+rcpt to:<usery@???>
+??? 250
+rcpt to:<userz@???>
+??? 250
+data
+??? 354
+Sender: sender@???
+.
+??? 353
+??? 250
+??? 450
+??? 550
+??? 250
+quit
+??? 221
+****
+sleep 1
+#
+#
+# 2: traditional data acl should be called, resulting in an overall reject
+client 127.0.0.1 PORT_D
+??? 220
+ehlo rhu.barb
+??? 250-
+??? 250-
+??? 250-
+??? 250-
+??? 250-PRDR
+??? 250
+mail from:<> PRDR
+??? 250
+rcpt to:<userp@???>
+??? 250
+rcpt to:<userq@???>
+??? 250
+data
+??? 354
+Sender: sender@???
+.
+??? 353
+??? 250
+??? 250
+??? 550
+quit
+??? 221
+****
+sleep 1
+#
+#
+# 3: PRDR should be avoided for a single-recipient message
+# even though the client showed support.
+client 127.0.0.1 PORT_D
+??? 220
+ehlo rhu.barb
+??? 250-
+??? 250-
+??? 250-
+??? 250-
+??? 250-PRDR
+??? 250
+mail from:<> PRDR
+??? 250
+rcpt to:<user1@???>
+??? 250
+data
+??? 354
+Sender: sender@???
+.
+??? 250
+quit
+??? 221
+****
+sleep 1
+#
+# 4: double temp-reject
+client 127.0.0.1 PORT_D
+??? 220
+ehlo rhu.barb
+??? 250-
+??? 250-
+??? 250-
+??? 250-
+??? 250-PRDR
+??? 250
+mail from:<> PRDR
+??? 250
+rcpt to:<usery@???>
+??? 250
+rcpt to:<usery@???>
+??? 250
+data
+??? 354
+Sender: sender@???
+.
+??? 353
+??? 450
+??? 450
+??? 250
+quit
+??? 221
+****
+sleep 1
+#
+# 5: double reject
+client 127.0.0.1 PORT_D
+??? 220
+ehlo rhu.barb
+??? 250-
+??? 250-
+??? 250-
+??? 250-
+??? 250-PRDR
+??? 250
+mail from:<> PRDR
+??? 250
+rcpt to:<userz@???>
+??? 250
+rcpt to:<userz@???>
+??? 250
+data
+??? 354
+Sender: sender@???
+.
+??? 353
+??? 550
+??? 550
+??? 550
+quit
+??? 221
+****
+sleep 1
+#
+killdaemon
+#
diff --git a/test/scripts/5500-PRDR/5510 b/test/scripts/5500-PRDR/5510
new file mode 100644
index 0000000..e5063a4
--- /dev/null
+++ b/test/scripts/5500-PRDR/5510
@@ -0,0 +1,228 @@
+# PRDR client
+need_ipv4
+no_msglog_check
+#
+# 1: Two recipients, accepted by full PRDR response sequence
+server PORT_S
+220 Server ready
+EHLO
+250-
+250-PRDR
+250 OK
+MAIL FROM:<userx@???> PRDR
+250 OK
+RCPT TO
+250 OK
+RCPT TO
+250 OK
+DATA
+300 gimme yer body
+.
+353 prdr responses coming up
+250 first rcpt was good
+250 second rcpt was good
+250 OK, overall
+QUIT
+250 OK
+****
+exim -odi -f userx usery userz
+Some message text.
+****
+#
+#
+# 2: Two recipients, accepted by traditional response
+# though client offered full PRDR capability
+server PORT_S
+220 Server ready
+EHLO
+250-
+250-PRDR
+250 OK
+MAIL FROM:<userx@???> PRDR
+250 OK
+RCPT TO
+250 OK
+RCPT TO
+250 OK
+DATA
+300 gimme that body
+.
+250 OK got that
+QUIT
+250 OK, bye
+****
+exim -odi -f userx user2.1 user2.2
+Some message text.
+****
+#
+#
+# 3: Two recipients, one accepted one tmp-rejected
+server PORT_S
+220 Server ready
+EHLO
+250-
+250-PRDR
+250 OK
+MAIL FROM:<userx@???> PRDR
+250 OK
+RCPT TO
+250 OK
+RCPT TO
+250 OK
+DATA
+300 gimme yer body
+.
+353 prdr responses coming up
+250 first rcpt was good
+450 cannot handle second rcpt right now
+250 OK, overall
+QUIT
+250 OK
+****
+exim -odi -f userx usery userz
+Some message text.
+****
+#
+#
+# 4: Two recipients, one accepted one rejected
+# Avoid tester issues dealing with the bounce by sending
+# with a null from.
+#
+server PORT_S
+220 Server ready
+EHLO
+250-
+250-PRDR
+250 OK
+MAIL FROM:<> PRDR
+250 OK
+RCPT TO
+250 OK
+RCPT TO
+250 OK
+DATA
+300 gimme yer body
+.
+353 prdr responses coming up
+250 first rcpt was good
+550 second rcpt does not like content
+250 OK, overall
+QUIT
+250 OK
+****
+exim -odi -f "" userp userq
+Some message text.
+****
+#
+#
+# 5: Two recipients, rejected by final after PRDR accepts.
+#
+server PORT_S
+220 Server ready
+EHLO
+250-
+250-PRDR
+250 OK
+MAIL FROM:<> PRDR
+250 OK
+RCPT TO
+250 OK
+RCPT TO
+250 OK
+DATA
+300 yeah baby
+.
+353 prdr responses coming up
+250 first rcpt was good
+250 second rcpt was good
+550 oops, overall rejection
+QUIT
+250 OK
+****
+exim -odi -f "" user5.1 user5.2
+text
+****
+#
+#
+# 6: Two recipients, rejected traditionally though PRDR negociated.
+#
+server PORT_S
+220 Server ready
+EHLO
+250-
+250-PRDR
+250 OK
+MAIL FROM:<> PRDR
+250 OK
+RCPT TO
+250 OK
+RCPT TO
+250 OK
+DATA
+300 yeah baby
+.
+550 naah mate
+QUIT
+250 OK
+****
+exim -odi -f "" user6.1 user6.2
+text
+****
+#
+#
+# 7: Temp-reject at final
+server PORT_S
+220 Server ready
+EHLO
+250-
+250-PRDR
+250 OK
+MAIL FROM:<> PRDR
+250 OK
+RCPT TO
+250 OK
+RCPT TO
+250 OK
+RCPT TO
+250 OK
+DATA
+300 go ahead
+.
+353 prdr responses coming up
+250 first rcpt does not like you
+250 second rcpt has a temporary problem
+250 third rcpt is ok
+450 oops, try again later please
+QUIT
+250 OK
+****
+exim -odi -f "" user7.1 user7.2 user7.3
+text
+****
+#
+#
+#
+# 8: Client should avoid requesting PRDR for a single-recipient mail
+# even though the server offers
+server PORT_S
+220 Server ready
+EHLO
+250-
+250-PRDR
+250 OK
+MAIL FROM:<>
+250 OK
+RCPT TO
+250 OK
+DATA
+300 go ahead
+.
+250 OK, got that
+QUIT
+250 OK, bye
+****
+exim -odi -f "" user8.1
+text
+****
+#
+#
diff --git a/test/scripts/5500-PRDR/REQUIRES b/test/scripts/5500-PRDR/REQUIRES
new file mode 100644
index 0000000..b3c9939
--- /dev/null
+++ b/test/scripts/5500-PRDR/REQUIRES
@@ -0,0 +1 @@
+support Experimental_PRDR
diff --git a/test/stderr/0121 b/test/stderr/0121
index c7fcec4..39cdfba 100644
--- a/test/stderr/0121
+++ b/test/stderr/0121
@@ -38,6 +38,20 @@ LOG: H=[127.0.0.1] F=<userx@???> rejected RCPT <userx@???>: Send

>>> processing "require"
>>> check verify = sender
>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

+>>> routing "unknown with spaces"@???
+>>> test.ex in "test.ex"? yes (matched "test.ex")
+>>> test.ex in "! +local_domains"? no (matched "! +local_domains")
+>>> unknown with spaces in "defer"? no (end of list)
+>>> unknown with spaces in "userx"? no (end of list)
+>>> no more routers
+>>> ----------- end verify ------------
+>>> require: condition test failed in ACL "check_recipient"
+LOG: H=[127.0.0.1] sender verify fail for <"unknown with spaces"@???>: Unrouteable address
+LOG: H=[127.0.0.1] F=<"unknown with spaces"@???> rejected RCPT <userx@???>: Sender verify failed
+>>> using ACL "check_recipient"
+>>> processing "require"
+>>> check verify = sender
+>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
>>> routing userx@???
>>> test.ex in "test.ex"? yes (matched "test.ex")
>>> test.ex in "! +local_domains"? no (matched "! +local_domains")

diff --git a/test/stderr/5500 b/test/stderr/5500
new file mode 100644
index 0000000..045fadc
--- /dev/null
+++ b/test/stderr/5500
@@ -0,0 +1,2 @@
+
+******** SERVER ********
diff --git a/test/stdout/0121 b/test/stdout/0121
index 7ef5e40..5e39682 100644
--- a/test/stdout/0121
+++ b/test/stdout/0121
@@ -15,6 +15,11 @@
550 Sender verify failed
250 Reset OK
250 OK
+550-Verification failed for <"unknown with spaces"@???>
+550-Unrouteable address
+550 Sender verify failed
+250 Reset OK
+250 OK
250 Accepted
354 Enter message, ending with "." on a line by itself
550 Administrative prohibition
diff --git a/test/stdout/2002 b/test/stdout/2002
index 7b2a47f..a248be7 100644
--- a/test/stdout/2002
+++ b/test/stdout/2002
@@ -36,6 +36,44 @@ Succeeded in starting TLS
??? 221
<<< 221 myhost.test.ex closing connection
End of script
+Connecting to 127.0.0.1 port 1225 ... connected
+??? 220
+<<< 220 myhost.test.ex ESMTP Exim x.yz Tue, 2 Mar 1999 09:44:33 +0000
+>>> ehlo rhu.barb
+??? 250-
+<<< 250-myhost.test.ex Hello rhu.barb [127.0.0.1]
+??? 250-
+<<< 250-SIZE 52428800
+??? 250-
+<<< 250-8BITMIME
+??? 250-
+<<< 250-PIPELINING
+??? 250-
+<<< 250-STARTTLS
+??? 250
+<<< 250 HELP
+>>> starttls
+??? 220
+<<< 220 TLS go ahead
+Attempting to start TLS
+Succeeded in starting TLS
+>>> mail from:<"name with spaces"@???>
+??? 250
+<<< 250 OK
+>>> rcpt to:<CALLER@???>
+??? 250
+<<< 250 Accepted
+>>> DATA
+??? 3
+<<< 354 Enter message, ending with "." on a line by itself
+>>> This is a test encrypted message.
+>>> .
+??? 250
+<<< 250 OK id=10HmaY-0005vi-00
+>>> quit
+??? 221
+<<< 221 myhost.test.ex closing connection
+End of script
Connecting to ip4.ip4.ip4.ip4 port 1225 ... connected
??? 220
<<< 220 myhost.test.ex ESMTP Exim x.yz Tue, 2 Mar 1999 09:44:33 +0000
@@ -93,7 +131,7 @@ Succeeded in starting TLS
>>> This is a test encrypted message from a verified host.
>>> .

??? 250
-<<< 250 OK id=10HmaY-0005vi-00
+<<< 250 OK id=10HmaZ-0005vi-00
>>> quit

??? 221
<<< 221 myhost.test.ex closing connection
diff --git a/test/stdout/2102 b/test/stdout/2102
index d3c18a8..23c39cd 100644
--- a/test/stdout/2102
+++ b/test/stdout/2102
@@ -52,6 +52,60 @@ Succeeded in starting TLS
??? 221
<<< 221 myhost.test.ex closing connection
End of script
+Connecting to 127.0.0.1 port 1225 ... connected
+??? 220
+<<< 220 myhost.test.ex ESMTP Exim x.yz Tue, 2 Mar 1999 09:44:33 +0000
+>>> ehlo rhu.barb
+??? 250-
+<<< 250-myhost.test.ex Hello rhu.barb [127.0.0.1]
+??? 250-
+<<< 250-SIZE 52428800
+??? 250-
+<<< 250-8BITMIME
+??? 250-
+<<< 250-PIPELINING
+??? 250-
+<<< 250-STARTTLS
+??? 250
+<<< 250 HELP
+>>> starttls
+??? 220
+<<< 220 TLS go ahead
+Attempting to start TLS
+SSL info: before/connect initialization
+SSL info: before/connect initialization
+SSL info: SSLv2/v3 write client hello A
+SSL info: SSLv3 read server hello A
+SSL info: SSLv3 read server certificate A
+SSL info: SSLv3 read server key exchange A
+SSL info: SSLv3 read server done A
+SSL info: SSLv3 write client key exchange A
+SSL info: SSLv3 write change cipher spec A
+SSL info: SSLv3 write finished A
+SSL info: SSLv3 flush data
+SSL info: SSLv3 read server session ticket A
+SSL info: SSLv3 read finished A
+SSL info: SSL negotiation finished successfully
+SSL info: SSL negotiation finished successfully
+SSL connection using AES256-SHA
+Succeeded in starting TLS
+>>> mail from:<"name with spaces"@???>
+??? 250
+<<< 250 OK
+>>> rcpt to:<CALLER@???>
+??? 250
+<<< 250 Accepted
+>>> DATA
+??? 3
+<<< 354 Enter message, ending with "." on a line by itself
+>>> This is a test encrypted message.
+>>> .
+??? 250
+<<< 250 OK id=10HmaY-0005vi-00
+>>> quit
+??? 221
+<<< 221 myhost.test.ex closing connection
+End of script
Connecting to ip4.ip4.ip4.ip4 port 1225 ... connected
??? 220
<<< 220 myhost.test.ex ESMTP Exim x.yz Tue, 2 Mar 1999 09:44:33 +0000
@@ -144,7 +198,7 @@ Succeeded in starting TLS
>>> This is a test encrypted message from a verified host.
>>> .

??? 250
-<<< 250 OK id=10HmaY-0005vi-00
+<<< 250 OK id=10HmaZ-0005vi-00
>>> quit

 ??? 221
 <<< 221 myhost.test.ex closing connection
diff --git a/test/stdout/5500 b/test/stdout/5500
new file mode 100644
index 0000000..d5efef7
--- /dev/null
+++ b/test/stdout/5500
@@ -0,0 +1,206 @@
+Connecting to 127.0.0.1 port 1225 ... connected
+??? 220
+<<< 220 myhost.test.ex ESMTP Exim x.yz Tue, 2 Mar 1999 09:44:33 +0000
+>>> ehlo rhu.barb
+??? 250-
+<<< 250-myhost.test.ex Hello rhu.barb [127.0.0.1]
+??? 250-
+<<< 250-SIZE 52428800
+??? 250-
+<<< 250-8BITMIME
+??? 250-
+<<< 250-PIPELINING
+??? 250-PRDR
+<<< 250-PRDR
+??? 250
+<<< 250 HELP
+>>> mail from:<> PRDR
+??? 250
+<<< 250 OK, PRDR Requested
+>>> rcpt to:<userx@???>
+??? 250
+<<< 250 Accepted
+>>> rcpt to:<usery@???>
+??? 250
+<<< 250 Accepted
+>>> rcpt to:<userz@???>
+??? 250
+<<< 250 Accepted
+>>> data
+??? 354
+<<< 354 Enter message, ending with "." on a line by itself
+>>> Sender: sender@???
+>>> .
+??? 353
+<<< 353 PRDR content analysis beginning
+??? 250
+<<< 250 PRDR R=<userx@???> acceptance
+??? 450
+<<< 450 PRDR R=<usery@???> temporary refusal
+??? 550
+<<< 550 PRDR R=<userz@???> refusal
+??? 250
+<<< 250 id=10HmaY-0005vi-00 message accepted for some recipients
+>>> quit
+??? 221
+<<< 221 myhost.test.ex closing connection
+End of script
+Connecting to 127.0.0.1 port 1225 ... connected
+??? 220
+<<< 220 myhost.test.ex ESMTP Exim x.yz Tue, 2 Mar 1999 09:44:33 +0000
+>>> ehlo rhu.barb
+??? 250-
+<<< 250-myhost.test.ex Hello rhu.barb [127.0.0.1]
+??? 250-
+<<< 250-SIZE 52428800
+??? 250-
+<<< 250-8BITMIME
+??? 250-
+<<< 250-PIPELINING
+??? 250-PRDR
+<<< 250-PRDR
+??? 250
+<<< 250 HELP
+>>> mail from:<> PRDR
+??? 250
+<<< 250 OK, PRDR Requested
+>>> rcpt to:<userp@???>
+??? 250
+<<< 250 Accepted
+>>> rcpt to:<userq@???>
+??? 250
+<<< 250 Accepted
+>>> data
+??? 354
+<<< 354 Enter message, ending with "." on a line by itself
+>>> Sender: sender@???
+>>> .
+??? 353
+<<< 353 PRDR content analysis beginning
+??? 250
+<<< 250 PRDR R=<userp@???> acceptance
+??? 250
+<<< 250 PRDR R=<userq@???> acceptance
+??? 550
+<<< 550 Administrative prohibition
+>>> quit
+??? 221
+<<< 221 myhost.test.ex closing connection
+End of script
+Connecting to 127.0.0.1 port 1225 ... connected
+??? 220
+<<< 220 myhost.test.ex ESMTP Exim x.yz Tue, 2 Mar 1999 09:44:33 +0000
+>>> ehlo rhu.barb
+??? 250-
+<<< 250-myhost.test.ex Hello rhu.barb [127.0.0.1]
+??? 250-
+<<< 250-SIZE 52428800
+??? 250-
+<<< 250-8BITMIME
+??? 250-
+<<< 250-PIPELINING
+??? 250-PRDR
+<<< 250-PRDR
+??? 250
+<<< 250 HELP
+>>> mail from:<> PRDR
+??? 250
+<<< 250 OK, PRDR Requested
+>>> rcpt to:<user1@???>
+??? 250
+<<< 250 Accepted
+>>> data
+??? 354
+<<< 354 Enter message, ending with "." on a line by itself
+>>> Sender: sender@???
+>>> .
+??? 250
+<<< 250 OK id=10HmaZ-0005vi-00
+>>> quit
+??? 221
+<<< 221 myhost.test.ex closing connection
+End of script
+Connecting to 127.0.0.1 port 1225 ... connected
+??? 220
+<<< 220 myhost.test.ex ESMTP Exim x.yz Tue, 2 Mar 1999 09:44:33 +0000
+>>> ehlo rhu.barb
+??? 250-
+<<< 250-myhost.test.ex Hello rhu.barb [127.0.0.1]
+??? 250-
+<<< 250-SIZE 52428800
+??? 250-
+<<< 250-8BITMIME
+??? 250-
+<<< 250-PIPELINING
+??? 250-PRDR
+<<< 250-PRDR
+??? 250
+<<< 250 HELP
+>>> mail from:<> PRDR
+??? 250
+<<< 250 OK, PRDR Requested
+>>> rcpt to:<usery@???>
+??? 250
+<<< 250 Accepted
+>>> rcpt to:<usery@???>
+??? 250
+<<< 250 Accepted
+>>> data
+??? 354
+<<< 354 Enter message, ending with "." on a line by itself
+>>> Sender: sender@???
+>>> .
+??? 353
+<<< 353 PRDR content analysis beginning
+??? 450
+<<< 450 PRDR R=<usery@???> temporary refusal
+??? 450
+<<< 450 PRDR R=<usery@???> temporary refusal
+??? 250
+<<< 250 id=10HmbA-0005vi-00 message accepted for some recipients
+>>> quit
+??? 221
+<<< 221 myhost.test.ex closing connection
+End of script
+Connecting to 127.0.0.1 port 1225 ... connected
+??? 220
+<<< 220 myhost.test.ex ESMTP Exim x.yz Tue, 2 Mar 1999 09:44:33 +0000
+>>> ehlo rhu.barb
+??? 250-
+<<< 250-myhost.test.ex Hello rhu.barb [127.0.0.1]
+??? 250-
+<<< 250-SIZE 52428800
+??? 250-
+<<< 250-8BITMIME
+??? 250-
+<<< 250-PIPELINING
+??? 250-PRDR
+<<< 250-PRDR
+??? 250
+<<< 250 HELP
+>>> mail from:<> PRDR
+??? 250
+<<< 250 OK, PRDR Requested
+>>> rcpt to:<userz@???>
+??? 250
+<<< 250 Accepted
+>>> rcpt to:<userz@???>
+??? 250
+<<< 250 Accepted
+>>> data
+??? 354
+<<< 354 Enter message, ending with "." on a line by itself
+>>> Sender: sender@???
+>>> .
+??? 353
+<<< 353 PRDR content analysis beginning
+??? 550
+<<< 550 PRDR R=<userz@???> refusal
+??? 550
+<<< 550 PRDR R=<userz@???> refusal
+??? 550
+<<< 550 id=10HmbB-0005vi-00 message rejected for all recipients
+>>> quit
+??? 221
+<<< 221 myhost.test.ex closing connection
+End of script
diff --git a/test/stdout/5510 b/test/stdout/5510
new file mode 100644
index 0000000..b9eb9db
--- /dev/null
+++ b/test/stdout/5510
@@ -0,0 +1,231 @@
+
+******** SERVER ********
+Listening on port 1224 ... 
+Connection request from [127.0.0.1]
+220 Server ready
+EHLO myhost.test.ex
+250-
+250-PRDR
+250 OK
+MAIL FROM:<userx@???> PRDR
+250 OK
+RCPT TO:<usery@???>
+250 OK
+RCPT TO:<userz@???>
+250 OK
+DATA
+300 gimme yer body
+Received: from CALLER by myhost.test.ex with local (Exim x.yz)
+    (envelope-from <userx@???>)
+    id 10HmaX-0005vi-00; Tue, 2 Mar 1999 09:44:33 +0000
+Message-Id: <E10HmaX-0005vi-00@???>
+From: userx@???
+Date: Tue, 2 Mar 1999 09:44:33 +0000
+
+Some message text.
+.
+353 prdr responses coming up
+250 first rcpt was good
+250 second rcpt was good
+250 OK, overall
+QUIT
+250 OK
+End of script
+Listening on port 1224 ... 
+Connection request from [127.0.0.1]
+220 Server ready
+EHLO myhost.test.ex
+250-
+250-PRDR
+250 OK
+MAIL FROM:<userx@???> PRDR
+250 OK
+RCPT TO:<user2.1@???>
+250 OK
+RCPT TO:<user2.2@???>
+250 OK
+DATA
+300 gimme that body
+Received: from CALLER by myhost.test.ex with local (Exim x.yz)
+    (envelope-from <userx@???>)
+    id 10HmaY-0005vi-00; Tue, 2 Mar 1999 09:44:33 +0000
+Message-Id: <E10HmaY-0005vi-00@???>
+From: userx@???
+Date: Tue, 2 Mar 1999 09:44:33 +0000
+
+Some message text.
+.
+250 OK got that
+QUIT
+250 OK, bye
+End of script
+Listening on port 1224 ... 
+Connection request from [127.0.0.1]
+220 Server ready
+EHLO myhost.test.ex
+250-
+250-PRDR
+250 OK
+MAIL FROM:<userx@???> PRDR
+250 OK
+RCPT TO:<usery@???>
+250 OK
+RCPT TO:<userz@???>
+250 OK
+DATA
+300 gimme yer body
+Received: from CALLER by myhost.test.ex with local (Exim x.yz)
+    (envelope-from <userx@???>)
+    id 10HmaZ-0005vi-00; Tue, 2 Mar 1999 09:44:33 +0000
+Message-Id: <E10HmaZ-0005vi-00@???>
+From: userx@???
+Date: Tue, 2 Mar 1999 09:44:33 +0000
+
+Some message text.
+.
+353 prdr responses coming up
+250 first rcpt was good
+450 cannot handle second rcpt right now
+250 OK, overall
+QUIT
+250 OK
+End of script
+Listening on port 1224 ... 
+Connection request from [127.0.0.1]
+220 Server ready
+EHLO myhost.test.ex
+250-
+250-PRDR
+250 OK
+MAIL FROM:<> PRDR
+250 OK
+RCPT TO:<userp@???>
+250 OK
+RCPT TO:<userq@???>
+250 OK
+DATA
+300 gimme yer body
+Received: from CALLER by myhost.test.ex with local (Exim x.yz)
+    id 10HmbA-0005vi-00; Tue, 2 Mar 1999 09:44:33 +0000
+Message-Id: <E10HmbA-0005vi-00@???>
+Date: Tue, 2 Mar 1999 09:44:33 +0000
+
+Some message text.
+.
+353 prdr responses coming up
+250 first rcpt was good
+550 second rcpt does not like content
+250 OK, overall
+Unexpected EOF read from client
+Listening on port 1224 ... 
+Connection request from [127.0.0.1]
+220 Server ready
+EHLO myhost.test.ex
+250-
+250-PRDR
+250 OK
+MAIL FROM:<> PRDR
+250 OK
+RCPT TO:<user5.1@???>
+250 OK
+RCPT TO:<user5.2@???>
+250 OK
+DATA
+300 yeah baby
+Received: from CALLER by myhost.test.ex with local (Exim x.yz)
+    id 10HmbB-0005vi-00; Tue, 2 Mar 1999 09:44:33 +0000
+Message-Id: <E10HmbB-0005vi-00@???>
+Date: Tue, 2 Mar 1999 09:44:33 +0000
+
+text
+.
+353 prdr responses coming up
+250 first rcpt was good
+250 second rcpt was good
+550 oops, overall rejection
+QUIT
+250 OK
+End of script
+Listening on port 1224 ... 
+Connection request from [127.0.0.1]
+220 Server ready
+EHLO myhost.test.ex
+250-
+250-PRDR
+250 OK
+MAIL FROM:<> PRDR
+250 OK
+RCPT TO:<user6.1@???>
+250 OK
+RCPT TO:<user6.2@???>
+250 OK
+DATA
+300 yeah baby
+Received: from CALLER by myhost.test.ex with local (Exim x.yz)
+    id 10HmbC-0005vi-00; Tue, 2 Mar 1999 09:44:33 +0000
+Message-Id: <E10HmbC-0005vi-00@???>
+Date: Tue, 2 Mar 1999 09:44:33 +0000
+
+text
+.
+550 naah mate
+QUIT
+250 OK
+End of script
+Listening on port 1224 ... 
+Connection request from [127.0.0.1]
+220 Server ready
+EHLO myhost.test.ex
+250-
+250-PRDR
+250 OK
+MAIL FROM:<> PRDR
+250 OK
+RCPT TO:<user7.1@???>
+250 OK
+RCPT TO:<user7.2@???>
+250 OK
+RCPT TO:<user7.3@???>
+250 OK
+DATA
+300 go ahead
+Received: from CALLER by myhost.test.ex with local (Exim x.yz)
+    id 10HmbD-0005vi-00; Tue, 2 Mar 1999 09:44:33 +0000
+Message-Id: <E10HmbD-0005vi-00@???>
+Date: Tue, 2 Mar 1999 09:44:33 +0000
+
+text
+.
+353 prdr responses coming up
+250 first rcpt does not like you
+250 second rcpt has a temporary problem
+250 third rcpt is ok
+450 oops, try again later please
+QUIT
+250 OK
+End of script
+Listening on port 1224 ... 
+Connection request from [127.0.0.1]
+220 Server ready
+EHLO myhost.test.ex
+250-
+250-PRDR
+250 OK
+MAIL FROM:<>
+250 OK
+RCPT TO:<user8.1@???>
+250 OK
+DATA
+300 go ahead
+Received: from CALLER by myhost.test.ex with local (Exim x.yz)
+    id 10HmbE-0005vi-00
+    for user8.1@???; Tue, 2 Mar 1999 09:44:33 +0000
+Message-Id: <E10HmbE-0005vi-00@???>
+Date: Tue, 2 Mar 1999 09:44:33 +0000
+
+text
+.
+250 OK, got that
+QUIT
+250 OK, bye
+End of script