ph10 2006/10/02 14:38:19 BST
Modified files:
exim-doc/doc-txt ChangeLog NewStuff
exim-src ACKNOWLEDGMENTS
exim-src/scripts MakeLinks
exim-src/src EDITME config.h.defaults drtables.c
exim.c
exim-src/src/auths Makefile
Added files:
exim-src/src/auths dovecot.c dovecot.h
exim-test/confs 3650
exim-test/log 3650
exim-test/rejectlog 3650
exim-test/scripts/3650-Dovecot 3650 REQUIRES
exim-test/stderr 3650
exim-test/stdout 3650
Log:
Added dovecot authenticator.
Revision Changes Path
1.400 +15 -0 exim/exim-doc/doc-txt/ChangeLog
1.112 +20 -0 exim/exim-doc/doc-txt/NewStuff
1.56 +2 -1 exim/exim-src/ACKNOWLEDGMENTS
1.7 +2 -0 exim/exim-src/scripts/MakeLinks
1.17 +1 -0 exim/exim-src/src/EDITME
1.4 +3 -1 exim/exim-src/src/auths/Makefile
1.1 +283 -0 exim/exim-src/src/auths/dovecot.c (new)
1.1 +30 -0 exim/exim-src/src/auths/dovecot.h (new)
1.12 +1 -0 exim/exim-src/src/config.h.defaults
1.7 +17 -0 exim/exim-src/src/drtables.c
1.44 +3 -0 exim/exim-src/src/exim.c
1.1 +39 -0 exim/exim-test/confs/3650 (new)
1.1 +4 -0 exim/exim-test/log/3650 (new)
1.1 +3 -0 exim/exim-test/rejectlog/3650 (new)
1.1 +18 -0 exim/exim-test/scripts/3650-Dovecot/3650 (new)
1.1 +2 -0 exim/exim-test/scripts/3650-Dovecot/REQUIRES (new)
1.1 +2 -0 exim/exim-test/stderr/3650 (new)
1.1 +21 -0 exim/exim-test/stdout/3650 (new)
Index: ChangeLog
===================================================================
RCS file: /home/cvs/exim/exim-doc/doc-txt/ChangeLog,v
retrieving revision 1.399
retrieving revision 1.400
diff -u -r1.399 -r1.400
--- ChangeLog 26 Sep 2006 13:51:57 -0000 1.399
+++ ChangeLog 2 Oct 2006 13:38:17 -0000 1.400
@@ -1,4 +1,4 @@
-$Cambridge: exim/exim-doc/doc-txt/ChangeLog,v 1.399 2006/09/26 13:51:57 ph10 Exp $
+$Cambridge: exim/exim-doc/doc-txt/ChangeLog,v 1.400 2006/10/02 13:38:17 ph10 Exp $
Change log file for Exim from version 4.21
-------------------------------------------
@@ -63,6 +63,21 @@
instead - this is what is used when a message is actually being sent. If
there is no remote transport (possible with a router that sets up host
addresses), $smtp_active_hostname is used.
+
+PH/12 Installed Andrey Panin's patch to add a dovecot authenticator. Various
+ tweaks were necessary in order to get it to work:
+ (a) The code assumed that strncpy() returns a negative number on buffer
+ overflow, which isn't the case. Replaced with Exim's string_format()
+ function.
+ (b) There were several signed/unsigned issues. I just did the minimum
+ hacking in of casts. There is scope for a larger refactoring.
+ (c) The code used strcasecmp() which is not a standard C function.
+ Replaced with Exim's strcmpic() function.
+ (d) The code set only $1; it now sets $auth1 as well.
+ (e) A simple test gave the error "authentication client didn't specify
+ service in request". It would seem that Dovecot has changed its
+ interface. Fortunately there's a specification; I followed it and
+ changed what the client sends and it appears to be working now.
Exim version 4.63
Index: NewStuff
===================================================================
RCS file: /home/cvs/exim/exim-doc/doc-txt/NewStuff,v
retrieving revision 1.111
retrieving revision 1.112
diff -u -r1.111 -r1.112
--- NewStuff 25 Sep 2006 10:14:20 -0000 1.111
+++ NewStuff 2 Oct 2006 13:38:18 -0000 1.112
@@ -1,4 +1,4 @@
-$Cambridge: exim/exim-doc/doc-txt/NewStuff,v 1.111 2006/09/25 10:14:20 ph10 Exp $
+$Cambridge: exim/exim-doc/doc-txt/NewStuff,v 1.112 2006/10/02 13:38:18 ph10 Exp $
New Features in Exim
--------------------
@@ -49,6 +49,26 @@
The modifier can be used in SMTP and non-SMTP ACLs. It applies to both
permanent and temporary rejections.
+
+3. There is a new authenticator called "dovecot". This is an interface to the
+ authentication facility of the Dovecot POP/IMAP server, which can support a
+ number of authentication methods. If you are using Dovecot to authenticate
+ POP/IMAP clients, it might be helpful to use the same mechanisms for SMTP
+ authentication. This is a server authenticator only. The only option is
+ server_socket, which must specify the socket which is the interface to
+ Dovecot authentication. The public_name option must specify an
+ authentication mechanism that Dovecot is configured to support. You can have
+ several authenticators for different mechanisms. For example:
+
+ dovecot_plain:
+ driver = PLAIN
+ server_name = /var/run/dovecot/auth-client
+ server_setid = $auth1
+
+ dovecot_ntlm:
+ driver = NTLM
+ server_name = /var/run/dovecot/auth-client
+ server_setid = $auth1
Version 4.63
Index: ACKNOWLEDGMENTS
===================================================================
RCS file: /home/cvs/exim/exim-src/ACKNOWLEDGMENTS,v
retrieving revision 1.55
retrieving revision 1.56
diff -u -r1.55 -r1.56
--- ACKNOWLEDGMENTS 19 Sep 2006 11:28:44 -0000 1.55
+++ ACKNOWLEDGMENTS 2 Oct 2006 13:38:18 -0000 1.56
@@ -1,4 +1,4 @@
-$Cambridge: exim/exim-src/ACKNOWLEDGMENTS,v 1.55 2006/09/19 11:28:44 ph10 Exp $
+$Cambridge: exim/exim-src/ACKNOWLEDGMENTS,v 1.56 2006/10/02 13:38:18 ph10 Exp $
EXIM ACKNOWLEDGEMENTS
@@ -20,7 +20,7 @@
Philip Hazel
Lists created: 20 November 2002
-Last updated: 19 September 2006
+Last updated: 02 October 2006
THE OLD LIST
@@ -210,6 +210,7 @@
Alexander Newmann Diagnosing and patching obscure and subtle socket bug
Matthew Newton Patch for exicyclog log location problem
Marcin Owsiany Diagnosis of a tricky timeout failure bug
+Andrey Panin Dovecot authenticator
Eric Parusel Patch for tls_remember_esmtp
Gaige Paulsen Amended Darwin config files
Richard Premdas Patch for PAM buglet
Index: MakeLinks
===================================================================
RCS file: /home/cvs/exim/exim-src/scripts/MakeLinks,v
retrieving revision 1.6
retrieving revision 1.7
diff -u -r1.6 -r1.7
--- MakeLinks 1 Aug 2005 13:20:28 -0000 1.6
+++ MakeLinks 2 Oct 2006 13:38:18 -0000 1.7
@@ -1,5 +1,5 @@
#!/bin/sh
-# $Cambridge: exim/exim-src/scripts/MakeLinks,v 1.6 2005/08/01 13:20:28 ph10 Exp $
+# $Cambridge: exim/exim-src/scripts/MakeLinks,v 1.7 2006/10/02 13:38:18 ph10 Exp $
# Script to build links for all the exim source files from the system-
# specific build directory. It should be run from within that directory.
@@ -177,6 +177,8 @@
ln -s ../../src/auths/pwcheck.h pwcheck.h
ln -s ../../src/auths/auth-spa.c auth-spa.c
ln -s ../../src/auths/auth-spa.h auth-spa.h
+ln -s ../../src/auths/dovecot.c dovecot.c
+ln -s ../../src/auths/dovecot.h dovecot.h
ln -s ../../src/auths/sha1.c sha1.c
ln -s ../../src/auths/spa.c spa.c
ln -s ../../src/auths/spa.h spa.h
Index: EDITME
===================================================================
RCS file: /home/cvs/exim/exim-src/src/EDITME,v
retrieving revision 1.16
retrieving revision 1.17
diff -u -r1.16 -r1.17
--- EDITME 12 Oct 2005 15:45:38 -0000 1.16
+++ EDITME 2 Oct 2006 13:38:18 -0000 1.17
@@ -1,4 +1,4 @@
-# $Cambridge: exim/exim-src/src/EDITME,v 1.16 2005/10/12 15:45:38 ph10 Exp $
+# $Cambridge: exim/exim-src/src/EDITME,v 1.17 2006/10/02 13:38:18 ph10 Exp $
##################################################
# The Exim mail transport agent #
@@ -475,6 +475,7 @@
# AUTH_CRAM_MD5=yes
# AUTH_CYRUS_SASL=yes
+# AUTH_DOVECOT=yes
# AUTH_PLAINTEXT=yes
# AUTH_SPA=yes
Index: config.h.defaults
===================================================================
RCS file: /home/cvs/exim/exim-src/src/config.h.defaults,v
retrieving revision 1.11
retrieving revision 1.12
diff -u -r1.11 -r1.12
--- config.h.defaults 19 Sep 2006 11:28:45 -0000 1.11
+++ config.h.defaults 2 Oct 2006 13:38:18 -0000 1.12
@@ -1,4 +1,4 @@
-/* $Cambridge: exim/exim-src/src/config.h.defaults,v 1.11 2006/09/19 11:28:45 ph10 Exp $ */
+/* $Cambridge: exim/exim-src/src/config.h.defaults,v 1.12 2006/10/02 13:38:18 ph10 Exp $ */
/*************************************************
* Exim - an Internet mail transport agent *
@@ -21,6 +21,7 @@
#define AUTH_CRAM_MD5
#define AUTH_CYRUS_SASL
+#define AUTH_DOVECOT
#define AUTH_PLAINTEXT
#define AUTH_SPA
Index: drtables.c
===================================================================
RCS file: /home/cvs/exim/exim-src/src/drtables.c,v
retrieving revision 1.6
retrieving revision 1.7
diff -u -r1.6 -r1.7
--- drtables.c 7 Feb 2006 11:19:00 -0000 1.6
+++ drtables.c 2 Oct 2006 13:38:18 -0000 1.7
@@ -1,4 +1,4 @@
-/* $Cambridge: exim/exim-src/src/drtables.c,v 1.6 2006/02/07 11:19:00 ph10 Exp $ */
+/* $Cambridge: exim/exim-src/src/drtables.c,v 1.7 2006/10/02 13:38:18 ph10 Exp $ */
/*************************************************
* Exim - an Internet mail transport agent *
@@ -551,6 +551,10 @@
#include "auths/cyrus_sasl.h"
#endif
+#ifdef AUTH_DOVECOT
+#include "auths/dovecot.h"
+#endif
+
#ifdef AUTH_PLAINTEXT
#include "auths/plaintext.h"
#endif
@@ -586,6 +590,19 @@
auth_cyrus_sasl_init, /* init function */
auth_cyrus_sasl_server, /* server function */
NULL /* client function */
+ },
+#endif
+
+#ifdef AUTH_DOVECOT
+ {
+ US"dovecot", /* lookup name */
+ auth_dovecot_options,
+ &auth_dovecot_options_count,
+ &auth_dovecot_option_defaults,
+ sizeof(auth_dovecot_options_block),
+ auth_dovecot_init, /* init function */
+ auth_dovecot_server, /* server function */
+ NULL /* client function */
},
#endif
Index: exim.c
===================================================================
RCS file: /home/cvs/exim/exim-src/src/exim.c,v
retrieving revision 1.43
retrieving revision 1.44
diff -u -r1.43 -r1.44
--- exim.c 18 Sep 2006 14:49:23 -0000 1.43
+++ exim.c 2 Oct 2006 13:38:18 -0000 1.44
@@ -1,4 +1,4 @@
-/* $Cambridge: exim/exim-src/src/exim.c,v 1.43 2006/09/18 14:49:23 ph10 Exp $ */
+/* $Cambridge: exim/exim-src/src/exim.c,v 1.44 2006/10/02 13:38:18 ph10 Exp $ */
/*************************************************
* Exim - an Internet mail transport agent *
@@ -979,6 +979,9 @@
#endif
#ifdef AUTH_CYRUS_SASL
fprintf(f, " cyrus_sasl");
+#endif
+#ifdef AUTH_DOVECOT
+ fprintf(f, " dovecot");
#endif
#ifdef AUTH_PLAINTEXT
fprintf(f, " plaintext");
Index: dovecot.c
====================================================================
/* $Cambridge: exim/exim-src/src/auths/dovecot.c,v 1.1 2006/10/02 13:38:18 ph10 Exp $ */
/*
* Copyright (c) 2004 Andrey Panin <pazke@???>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published
* by the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#include "../exim.h"
#include "dovecot.h"
#define VERSION_MAJOR 1
#define VERSION_MINOR 0
/* Options specific to the authentication mechanism. */
optionlist auth_dovecot_options[] = {
{
"server_socket",
opt_stringptr,
(void *)(offsetof(auth_dovecot_options_block, server_socket))
},
};
/* Size of the options list. An extern variable has to be used so that its
address can appear in the tables drtables.c. */
int auth_dovecot_options_count =
sizeof(auth_dovecot_options) / sizeof(optionlist);
/* Default private options block for the authentication method. */
auth_dovecot_options_block auth_dovecot_option_defaults = {
NULL, /* server_socket */
};
/*************************************************
* Initialization entry point *
*************************************************/
/* Called for each instance, after its options have been read, to
enable consistency checks to be done, or anything else that needs
to be set up. */
void auth_dovecot_init(auth_instance *ablock)
{
auth_dovecot_options_block *ob =
(auth_dovecot_options_block *)(ablock->options_block);
if (ablock->public_name == NULL)
ablock->public_name = ablock->name;
if (ob->server_socket != NULL)
ablock->server = TRUE;
ablock->client = FALSE;
}
static int strcut(char *str, char **ptrs, int nptrs)
{
char *tmp = str;
int n;
for (n = 0; n < nptrs; n++)
ptrs[n] = NULL;
n = 1;
while (*str) {
if (*str == '\t') {
if (n <= nptrs) {
*ptrs++ = tmp;
tmp = str + 1;
*str = 0;
}
n++;
}
str++;
}
if (n < nptrs)
*ptrs = tmp;
return n;
}
#define CHECK_COMMAND(str, arg_min, arg_max) do { \
if (strcasecmp((str), args[0]) != 0) \
goto out; \
if (nargs - 1 < (arg_min)) \
goto out; \
if (nargs - 1 > (arg_max)) \
goto out; \
} while (0)
#define OUT(msg) do { \
auth_defer_msg = (US msg); \
goto out; \
} while(0)
/*************************************************
* Server entry point *
*************************************************/
int auth_dovecot_server(auth_instance *ablock, uschar *data)
{
auth_dovecot_options_block *ob =
(auth_dovecot_options_block *)(ablock->options_block);
struct sockaddr_un sa;
char buffer[4096];
char *args[8];
int nargs, tmp;
int cuid = 0, cont = 1, found = 0, fd, ret = DEFER;
FILE *f;
HDEBUG(D_auth) debug_printf("dovecot authentication\n");
memset(&sa, 0, sizeof(sa));
sa.sun_family = AF_UNIX;
/* This was the original code here: it is nonsense because strncpy()
does not return an integer. I have converted this to use the function
that formats and checks length. PH */
/*
if (strncpy(sa.sun_path, ob->server_socket, sizeof(sa.sun_path)) < 0) {
*/
if (!string_format(US sa.sun_path, sizeof(sa.sun_path), "%s",
ob->server_socket)) {
auth_defer_msg = US"authentication socket path too long";
return DEFER;
}
auth_defer_msg = US"authentication socket connection error";
fd = socket(PF_UNIX, SOCK_STREAM, 0);
if (fd < 0)
return DEFER;
if (connect(fd, (struct sockaddr *) &sa, sizeof(sa)) < 0)
goto out;
f = fdopen(fd, "a+");
if (f == NULL)
goto out;
auth_defer_msg = US"authentication socket protocol error";
while (cont) {
if (fgets(buffer, sizeof(buffer), f) == NULL)
OUT("authentication socket read error or premature eof");
buffer[strlen(buffer) - 1] = 0;
HDEBUG(D_auth) debug_printf("received: %s\n", buffer);
nargs = strcut(buffer, args, sizeof(args) / sizeof(args[0]));
switch (toupper(*args[0])) {
case 'C':
CHECK_COMMAND("CUID", 1, 1);
cuid = atoi(args[1]);
break;
case 'D':
CHECK_COMMAND("DONE", 0, 0);
cont = 0;
break;
case 'M':
CHECK_COMMAND("MECH", 1, INT_MAX);
if (strcmpic(US args[1], ablock->public_name) == 0)
found = 1;
break;
case 'S':
CHECK_COMMAND("SPID", 1, 1);
break;
case 'V':
CHECK_COMMAND("VERSION", 2, 2);
if (atoi(args[1]) != VERSION_MAJOR)
OUT("authentication socket protocol version mismatch");
break;
default:
goto out;
}
}
if (!found)
goto out;
fprintf(f, "VERSION\t%d\t%d\nCPID\t%d\n"
"AUTH\t%d\t%s\tservice=smtp\trip=%s\tlip=%s\tresp=%s\n",
VERSION_MAJOR, VERSION_MINOR, getpid(), cuid,
ablock->public_name, sender_host_address, interface_address,
data ? (char *) data : "");
/****************************************************************************
The code below was the original code here. It didn't work. A reading of the
file auth-protocol.txt.gz that came with Dovecot 1.0_beta8 indicated that
this was not right. Maybe something changed. I changed it to the above, and
it seems to be better. PH
fprintf(f, "VERSION\t%d\t%d\r\nSERVICE\tSMTP\r\nCPID\t%d\r\n"
"AUTH\t%d\t%s\trip=%s\tlip=%s\tresp=%s\r\n",
VERSION_MAJOR, VERSION_MINOR, getpid(), cuid,
ablock->public_name, sender_host_address, interface_address,
data ? (char *) data : "");
****************************************************************************/
HDEBUG(D_auth) debug_printf("sent: VERSION\t%d\t%d\nsent: CPID\t%d\n"
"sent: AUTH\t%d\t%s\tservice=smtp\trip=%s\tlip=%s\tresp=%s\n",
VERSION_MAJOR, VERSION_MINOR, getpid(), cuid,
ablock->public_name, sender_host_address, interface_address,
data ? (char *) data : "");
while (1) {
if (fgets(buffer, sizeof(buffer), f) == NULL) {
auth_defer_msg = US"authentication socket read error or premature eof";
goto out;
}
buffer[strlen(buffer) - 1] = 0;
HDEBUG(D_auth) debug_printf("received: %s\n", buffer);
nargs = strcut(buffer, args, sizeof(args) / sizeof(args[0]));
if (atoi(args[1]) != cuid)
OUT("authentication socket connection id mismatch");
switch (toupper(*args[0])) {
case 'C':
CHECK_COMMAND("CONT", 1, 2);
tmp = auth_get_no64_data(&data, US args[2]);
if (tmp != OK) {
ret = tmp;
goto out;
}
if (fprintf(f, "CONT\t%d\t%s\r\n", cuid, data) < 0)
OUT("authentication socket write error");
break;
case 'F':
CHECK_COMMAND("FAIL", 1, 2);
/* FIXME: add proper response handling */
if (args[2]) {
uschar *p = US strchr(args[2], '=');
if (p) {
++p;
expand_nstring[1] = auth_vars[0] = p;
expand_nlength[1] = Ustrlen(p);
expand_nmax = 1;
}
}
ret = FAIL;
goto out;
case 'O':
CHECK_COMMAND("OK", 2, 2);
{
/* FIXME: add proper response handling */
uschar *p = US strchr(args[2], '=');
if (!p)
OUT("authentication socket protocol error, username missing");
p++;
expand_nstring[1] = auth_vars[0] = p;
expand_nlength[1] = Ustrlen(p);
expand_nmax = 1;
}
ret = OK;
/* fallthrough */
default:
goto out;
}
}
out: close(fd);
return ret;
}
Index: dovecot.h
====================================================================
/* $Cambridge: exim/exim-src/src/auths/dovecot.h,v 1.1 2006/10/02 13:38:18 ph10 Exp $ */
/*************************************************
* Exim - an Internet mail transport agent *
*************************************************/
/* Copyright (c) University of Cambridge 1995 - 2006 */
/* See the file NOTICE for conditions of use and distribution. */
/* Private structure for the private options. */
typedef struct {
uschar *server_socket;
} auth_dovecot_options_block;
/* Data for reading the private options. */
extern optionlist auth_dovecot_options[];
extern int auth_dovecot_options_count;
/* Block containing default values. */
extern auth_dovecot_options_block auth_dovecot_option_defaults;
/* The entry points for the mechanism */
extern void auth_dovecot_init(auth_instance *);
extern int auth_dovecot_server(auth_instance *, uschar *);
/* End of dovecot.h */
Index: Makefile
===================================================================
RCS file: /home/cvs/exim/exim-src/src/auths/Makefile,v
retrieving revision 1.3
retrieving revision 1.4
diff -u -r1.3 -r1.4
--- Makefile 12 Sep 2005 13:50:03 -0000 1.3
+++ Makefile 2 Oct 2006 13:38:18 -0000 1.4
@@ -1,4 +1,4 @@
-# $Cambridge: exim/exim-src/src/auths/Makefile,v 1.3 2005/09/12 13:50:03 ph10 Exp $
+# $Cambridge: exim/exim-src/src/auths/Makefile,v 1.4 2006/10/02 13:38:18 ph10 Exp $
# Make file for building a library containing all the available authorization
# methods, and calling it auths.a. In addition, there are functions that are
@@ -9,7 +9,8 @@
OBJ = b64encode.o b64decode.o call_pam.o call_pwcheck.o call_radius.o \
xtextencode.o xtextdecode.o get_data.o get_no64_data.o md5.o \
- cram_md5.o cyrus_sasl.o plaintext.o pwcheck.o sha1.o auth-spa.o spa.o
+ cram_md5.o cyrus_sasl.o dovecot.o plaintext.o pwcheck.o sha1.o \
+ auth-spa.o spa.o
auths.a: $(OBJ)
@$(RM_COMMAND) -f auths.a
@@ -38,6 +39,7 @@
cram_md5.o: $(HDRS) cram_md5.c cram_md5.h
cyrus_sasl.o: $(HDRS) cyrus_sasl.c cyrus_sasl.h
+dovecot.o: $(HDRS) dovecot.c dovecot.h
plaintext.o: $(HDRS) plaintext.c plaintext.h
spa.o: $(HDRS) spa.c spa.h
Index: 3650
====================================================================
# Exim test configuration 3650
SERVER=
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/SERVER%slog
gecos_pattern = ""
gecos_name = CALLER_NAME
# ----- Main settings -----
acl_smtp_rcpt = check_recipient
# ----- ACL -----
begin acl
check_recipient:
deny message = authentication required
!authenticated = *
accept
# ----- Authentication -----
begin authenticators
dovecot:
driver = dovecot
public_name = PLAIN
server_socket = /var/run/dovecot/auth-client
server_set_id = $auth1
# End
Index: 3650
====================================================================
******** SERVER ********
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 dovecot authenticator failed for (xxxx) [127.0.0.1]: 535 Incorrect authentication data (set_id=userx)
Index: 3650
====================================================================
******** SERVER ********
1999-03-02 09:44:33 dovecot authenticator failed for (xxxx) [127.0.0.1]: 535 Incorrect authentication data (set_id=userx)
Index: 3650
====================================================================
# Dovecot authentication (server only)
exim -DSERVER=server -bd -oX PORT_D
****
client -t3 127.0.0.1 PORT_D
??? 220
EHLO xxxx
??? 250-
??? 250-
??? 250-
??? 250-
??? 250
AUTH PLAIN AHVzZXJ4AHNlY3JldA==
??? 535
quit
??? 221
****
killdaemon
no_msglog_check
Index: REQUIRES
====================================================================
authenticator dovecot
running IPv4
Index: 3650
====================================================================
******** SERVER ********
Index: 3650
====================================================================
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 xxxx
??? 250-
<<< 250-myhost.test.ex Hello xxxx [127.0.0.1]
??? 250-
<<< 250-SIZE 52428800
??? 250-
<<< 250-PIPELINING
??? 250-
<<< 250-AUTH PLAIN
??? 250
<<< 250 HELP
>>> AUTH PLAIN AHVzZXJ4AHNlY3JldA==
??? 535
<<< 535 Incorrect authentication data
>>> quit
??? 221
<<< 221 myhost.test.ex closing connection
End of script
