Gitweb:
https://git.exim.org/exim.git/commitdiff/179ed8c31eb8c7f767ec0ef5e2856066d366515f
Commit: 179ed8c31eb8c7f767ec0ef5e2856066d366515f
Parent: 6ce1ece9cb2b13fdc4d235146fa98835811570bd
Author: Jeremy Harris <jgh146exb@???>
AuthorDate: Tue Nov 5 21:13:41 2019 +0000
Committer: Jeremy Harris <jgh146exb@???>
CommitDate: Tue Nov 5 21:26:38 2019 +0000
DKIM/CHUNKING: support CHUNKING when a transport_filter is used, if DKIM signing is being done
---
doc/doc-docbook/spec.xfpt | 3 ++
doc/doc-txt/ChangeLog | 4 ++
src/src/transports/smtp.c | 5 ++
test/aux-fixed/4525.mlistfooter | 4 ++
test/confs/4525 | 113 ++++++++++++++++++++++++++++++++++++++++
test/log/4525 | 48 +++++++++++++++++
test/mail/4525.a | 22 ++++++++
test/mail/4525.b | 52 ++++++++++++++++++
test/mail/4525.c | 52 ++++++++++++++++++
test/scripts/4500-DKIM/4525 | 54 +++++++++++++++++++
10 files changed, 357 insertions(+)
diff --git a/doc/doc-docbook/spec.xfpt b/doc/doc-docbook/spec.xfpt
index c8b999c..62109e9 100644
--- a/doc/doc-docbook/spec.xfpt
+++ b/doc/doc-docbook/spec.xfpt
@@ -24897,6 +24897,9 @@ unauthenticated. See also &%hosts_require_auth%&, and chapter
.cindex "RFC 3030" "CHUNKING"
This option provides a list of servers to which, provided they announce
CHUNKING support, Exim will attempt to use BDAT commands rather than DATA.
+.new
+Unless DKIM signing is being done,
+.wen
BDAT will not be used in conjunction with a transport filter.
.option hosts_try_dane smtp "host list&!!" *
diff --git a/doc/doc-txt/ChangeLog b/doc/doc-txt/ChangeLog
index 45d126c..f9e39d2 100644
--- a/doc/doc-txt/ChangeLog
+++ b/doc/doc-txt/ChangeLog
@@ -18,6 +18,10 @@ JH/03 DKIM verification defaults no long accept sha1 hashes, to conform to
RFC 8301. They can still be enabled, using the dkim_verify_hashes main
option.
+JH/04 Support CHUNKING from an smtp transport using a transport_filter, when
+ DKIM signing is being done. Previously a transport_filter would always
+ disable CHUNKING, falling back to traditional DATA.
+
Exim version 4.93
-----------------
diff --git a/src/src/transports/smtp.c b/src/src/transports/smtp.c
index b16b8b1..383d202 100644
--- a/src/src/transports/smtp.c
+++ b/src/src/transports/smtp.c
@@ -3571,6 +3571,11 @@ if (tblock->filter_command)
&& *transport_filter_argv
&& **transport_filter_argv
&& sx.peer_offered & OPTION_CHUNKING
+#ifndef DISABLE_DKIM
+ /* When dkim signing, chunking is handled even with a transport-filter */
+ && !(ob->dkim.dkim_private_key && ob->dkim.dkim_domain && ob->dkim.dkim_selector)
+ && !ob->dkim.force_bodyhash
+#endif
)
{
sx.peer_offered &= ~OPTION_CHUNKING;
diff --git a/test/aux-fixed/4525.mlistfooter b/test/aux-fixed/4525.mlistfooter
new file mode 100644
index 0000000..7c33b82
--- /dev/null
+++ b/test/aux-fixed/4525.mlistfooter
@@ -0,0 +1,4 @@
+
+--
+This is a generic mailinglist footer, using a traditional .sig-separator line
+----
diff --git a/test/confs/4525 b/test/confs/4525
new file mode 100644
index 0000000..3a843b9
--- /dev/null
+++ b/test/confs/4525
@@ -0,0 +1,113 @@
+# Exim test configuration 4525
+
+SERVER=
+OPT=
+FAKE =
+
+keep_environment = PATH:EXIM_TESTHARNESS_DISABLE_OCSPVALIDITYCHECK
+add_environment = SSLKEYLOGFILE=/home/jgh/git/exim/test/spool/sslkeys
+exim_path = EXIM_PATH
+host_lookup_order = bydns
+spool_directory = /home/jgh/git/exim/test/spool
+
+.ifdef SERVER
+log_file_path = /home/jgh/git/exim/test/spool/log/SERVER%slog
+.else
+log_file_path = /home/jgh/git/exim/test/spool/log/%slog
+.endif
+
+gecos_pattern = ""
+gecos_name = CALLER_NAME
+dns_cname_loops = 9
+chunking_advertise_hosts = *
+
+.ifdef _HAVE_REQTLS
+tls_advertise_requiretls =
+.endif
+.ifdef _HAVE_PIPE_CONNECT
+pipelining_connect_advertise_hosts = :
+.endif
+.ifdef _HAVE_DMARC
+dmarc_tld_file =
+.endif
+tls_advertise_hosts =
+
+primary_hostname = myhost.test.ex
+
+# ----- Main settings -----
+
+acl_smtp_rcpt = accept logwrite = rcpt acl: macro: _DKIM_SIGN_HEADERS
+acl_smtp_dkim = accept logwrite = dkim_acl: signer: $dkim_cur_signer bits: $dkim_key_length h=$dkim_headernames
+acl_smtp_data = accept logwrite = data acl: dkim status $dkim_verify_status
+
+dkim_verify_signers = $dkim_signers
+
+DDIR=DIR/aux-fixed/dkim
+
+log_selector = +received_recipients
+
+
+# ----- Routers
+
+begin routers
+
+server_store:
+ driver = accept
+ condition = ${if eq {SERVER}{server}{yes}{no}}
+ transport = file
+
+client:
+ driver = accept
+ transport = send_to_server
+
+# ----- Transports
+
+begin transports
+
+send_to_server:
+ driver = smtp
+ allow_localhost
+ hosts = HOSTIPV4
+ port = PORT_D
+
+.ifdef FILTER
+ transport_filter = /bin/cat - DIR/aux-fixed/TESTNUM.mlistfooter
+.endif
+.ifndef ALLOW
+ hosts_try_chunking = :
+.endif
+
+ dkim_domain = test.ex
+.ifdef SELECTOR
+ dkim_selector = SELECTOR
+.else
+ dkim_selector = sel
+.endif
+
+ dkim_private_key = ${extract {${length_3:$dkim_selector}} {\
+ ses=dkim512.private \
+ sel=dkim.private \
+ sed=dkim_ed25519.private \
+ }{DDIR/$value}}
+
+.ifndef HEADERS_MAXSIZE
+ dkim_sign_headers = OPT
+.else
+ dkim_identity = allheaders@$dkim_domain
+.endif
+.ifdef VALUE
+ dkim_hash = VALUE
+.endif
+.ifdef STRICT
+ dkim_strict = STRICT
+.endif
+.ifdef TIMES
+ dkim_timestamps = TIMES
+.endif
+
+file:
+ driver = appendfile
+ file = DIR/test-mail/$local_part
+ user = CALLER
+
+# End
diff --git a/test/log/4525 b/test/log/4525
new file mode 100644
index 0000000..f4b7496
--- /dev/null
+++ b/test/log/4525
@@ -0,0 +1,48 @@
+1999-03-02 09:44:33 10HmaX-0005vi-00 <= CALLER@??? U=CALLER P=local S=sss for a@???
+1999-03-02 09:44:33 10HmaX-0005vi-00 => a@??? R=client T=send_to_server H=ip4.ip4.ip4.ip4 [ip4.ip4.ip4.ip4] C="250 OK id=10HmaY-0005vi-00"
+1999-03-02 09:44:33 10HmaX-0005vi-00 Completed
+1999-03-02 09:44:33 10HmaZ-0005vi-00 <= CALLER@??? U=CALLER P=local S=sss for b@???
+1999-03-02 09:44:33 10HmaZ-0005vi-00 => b@??? R=client T=send_to_server H=ip4.ip4.ip4.ip4 [ip4.ip4.ip4.ip4] C="250 OK id=10HmbA-0005vi-00"
+1999-03-02 09:44:33 10HmaZ-0005vi-00 Completed
+1999-03-02 09:44:33 10HmbB-0005vi-00 <= CALLER@??? U=CALLER P=local S=sss for c@???
+1999-03-02 09:44:33 10HmbB-0005vi-00 => c@??? R=client T=send_to_server H=ip4.ip4.ip4.ip4 [ip4.ip4.ip4.ip4] K C="250- 7nn byte chunk, total 7nn\\n250 OK id=10HmbC-0005vi-00"
+1999-03-02 09:44:33 10HmbB-0005vi-00 Completed
+1999-03-02 09:44:33 10HmbD-0005vi-00 <= CALLER@??? U=CALLER P=local S=sss for b@???
+1999-03-02 09:44:33 10HmbD-0005vi-00 => b@??? R=client T=send_to_server H=ip4.ip4.ip4.ip4 [ip4.ip4.ip4.ip4] C="250 OK id=10HmbE-0005vi-00"
+1999-03-02 09:44:33 10HmbD-0005vi-00 Completed
+1999-03-02 09:44:33 10HmbF-0005vi-00 <= CALLER@??? U=CALLER P=local S=sss for c@???
+1999-03-02 09:44:33 10HmbF-0005vi-00 => c@??? R=client T=send_to_server H=ip4.ip4.ip4.ip4 [ip4.ip4.ip4.ip4] K C="250- 7nn byte chunk, total 7nn\\n250 OK id=10HmbG-0005vi-00"
+1999-03-02 09:44:33 10HmbF-0005vi-00 Completed
+
+******** SERVER ********
+1999-03-02 09:44:33 exim x.yz daemon started: pid=pppp, no queue runs, listening for SMTP on port PORT_D
+1999-03-02 09:44:33 rcpt acl: macro: From:Sender:Reply-To:Subject:Date:Message-ID:To:Cc:MIME-Version:Content-Type:Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Id:List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive
+1999-03-02 09:44:33 10HmaY-0005vi-00 dkim_acl: signer: test.ex bits: 1024 h=From
+1999-03-02 09:44:33 10HmaY-0005vi-00 data acl: dkim status pass
+1999-03-02 09:44:33 10HmaY-0005vi-00 <= CALLER@??? H=the.local.host.name (myhost.test.ex) [ip4.ip4.ip4.ip4] P=esmtp S=sss DKIM=test.ex id=E10HmaX-0005vi-00@??? for a@???
+1999-03-02 09:44:33 10HmaY-0005vi-00 => a <a@???> R=server_store T=file
+1999-03-02 09:44:33 10HmaY-0005vi-00 Completed
+1999-03-02 09:44:33 rcpt acl: macro: From:Sender:Reply-To:Subject:Date:Message-ID:To:Cc:MIME-Version:Content-Type:Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Id:List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive
+1999-03-02 09:44:33 10HmbA-0005vi-00 dkim_acl: signer: test.ex bits: 1024 h=From
+1999-03-02 09:44:33 10HmbA-0005vi-00 data acl: dkim status pass
+1999-03-02 09:44:33 10HmbA-0005vi-00 <= CALLER@??? H=the.local.host.name (myhost.test.ex) [ip4.ip4.ip4.ip4] P=esmtp S=sss DKIM=test.ex id=E10HmaZ-0005vi-00@??? for b@???
+1999-03-02 09:44:33 10HmbA-0005vi-00 => b <b@???> R=server_store T=file
+1999-03-02 09:44:33 10HmbA-0005vi-00 Completed
+1999-03-02 09:44:33 rcpt acl: macro: From:Sender:Reply-To:Subject:Date:Message-ID:To:Cc:MIME-Version:Content-Type:Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Id:List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive
+1999-03-02 09:44:33 10HmbC-0005vi-00 dkim_acl: signer: test.ex bits: 1024 h=From
+1999-03-02 09:44:33 10HmbC-0005vi-00 data acl: dkim status pass
+1999-03-02 09:44:33 10HmbC-0005vi-00 <= CALLER@??? H=the.local.host.name (myhost.test.ex) [ip4.ip4.ip4.ip4] P=esmtp K S=sss DKIM=test.ex id=E10HmbB-0005vi-00@??? for c@???
+1999-03-02 09:44:33 10HmbC-0005vi-00 => c <c@???> R=server_store T=file
+1999-03-02 09:44:33 10HmbC-0005vi-00 Completed
+1999-03-02 09:44:33 rcpt acl: macro: From:Sender:Reply-To:Subject:Date:Message-ID:To:Cc:MIME-Version:Content-Type:Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Id:List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive
+1999-03-02 09:44:33 10HmbE-0005vi-00 dkim_acl: signer: test.ex bits: 1024 h=From
+1999-03-02 09:44:33 10HmbE-0005vi-00 data acl: dkim status pass
+1999-03-02 09:44:33 10HmbE-0005vi-00 <= CALLER@??? H=the.local.host.name (myhost.test.ex) [ip4.ip4.ip4.ip4] P=esmtp S=sss DKIM=test.ex id=E10HmbD-0005vi-00@??? for b@???
+1999-03-02 09:44:33 10HmbE-0005vi-00 => b <b@???> R=server_store T=file
+1999-03-02 09:44:33 10HmbE-0005vi-00 Completed
+1999-03-02 09:44:33 rcpt acl: macro: From:Sender:Reply-To:Subject:Date:Message-ID:To:Cc:MIME-Version:Content-Type:Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Id:List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive
+1999-03-02 09:44:33 10HmbG-0005vi-00 dkim_acl: signer: test.ex bits: 1024 h=From
+1999-03-02 09:44:33 10HmbG-0005vi-00 data acl: dkim status pass
+1999-03-02 09:44:33 10HmbG-0005vi-00 <= CALLER@??? H=the.local.host.name (myhost.test.ex) [ip4.ip4.ip4.ip4] P=esmtp K S=sss DKIM=test.ex id=E10HmbF-0005vi-00@??? for c@???
+1999-03-02 09:44:33 10HmbG-0005vi-00 => c <c@???> R=server_store T=file
+1999-03-02 09:44:33 10HmbG-0005vi-00 Completed
diff --git a/test/mail/4525.a b/test/mail/4525.a
new file mode 100644
index 0000000..2f78aec
--- /dev/null
+++ b/test/mail/4525.a
@@ -0,0 +1,22 @@
+From CALLER@??? Tue Mar 02 09:44:33 1999
+Received: from the.local.host.name ([ip4.ip4.ip4.ip4] helo=myhost.test.ex)
+ by myhost.test.ex with esmtp (Exim x.yz)
+ (envelope-from <CALLER@???>)
+ id 10HmaY-0005vi-00
+ for a@???; Tue, 2 Mar 1999 09:44:33 +0000
+DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=test.ex;
+ s=sel; h=From; bh=/Ab0giHZitYQbDhFszoqQRUkgqueaX9zatJttIU/plc=; b=toy5chxow6W
+ 7Nn3qMvjZs+i0H00bQfi+6nakV6i36cRrZM/oWziHrc5IfYZuQunWNUA9UHnatK35Nsl7ZJRBU4em
+ wtzdO60jXnH7ZVyYjKxqTow9uCuuBKCgXdKxt1hpEfY0m7uUKt9OaqA0464NH5wEC4o/pt1aReidE
+ hvI6IY=;
+Received: from CALLER by myhost.test.ex with local (Exim x.yz)
+ (envelope-from <CALLER@???>)
+ id 10HmaX-0005vi-00
+ for a@???; Tue, 2 Mar 1999 09:44:33 +0000
+From: nobody@???
+Message-Id: <E10HmaX-0005vi-00@???>
+Sender: CALLER_NAME <CALLER@???>
+Date: Tue, 2 Mar 1999 09:44:33 +0000
+
+content
+
diff --git a/test/mail/4525.b b/test/mail/4525.b
new file mode 100644
index 0000000..6cd2538
--- /dev/null
+++ b/test/mail/4525.b
@@ -0,0 +1,52 @@
+From CALLER@??? Tue Mar 02 09:44:33 1999
+Received: from the.local.host.name ([ip4.ip4.ip4.ip4] helo=myhost.test.ex)
+ by myhost.test.ex with esmtp (Exim x.yz)
+ (envelope-from <CALLER@???>)
+ id 10HmbA-0005vi-00
+ for b@???; Tue, 2 Mar 1999 09:44:33 +0000
+DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=test.ex;
+ s=sel; h=From; bh=bzHKix52TV0ojCi2kd18gmIw/tcd5TnhO3QM+89xwyk=; b=LcQAFwKN9DL
+ wCbK0mcUtjmEoLaNUjwHmVrilQI1nBWJDoDUzpUl96U8YzdS/+Xut+pdS/YZf3m/Qbcw6ohO9pEmM
+ ncfURg55wr8fftAyRFA/L/svtP8h3Qv/+jv8gJ9nHyjk3z7Zmzzo8S54h9Ct9pJwkv0cpmdeLiDrL
+ ygZGjs=;
+Received: from CALLER by myhost.test.ex with local (Exim x.yz)
+ (envelope-from <CALLER@???>)
+ id 10HmaZ-0005vi-00
+ for b@???; Tue, 2 Mar 1999 09:44:33 +0000
+From: nobody@???
+Message-Id: <E10HmaZ-0005vi-00@???>
+Sender: CALLER_NAME <CALLER@???>
+Date: Tue, 2 Mar 1999 09:44:33 +0000
+
+content
+
+--
+This is a generic mailinglist footer, using a traditional .sig-separator line
+----
+
+From CALLER@??? Tue Mar 02 09:44:33 1999
+Received: from the.local.host.name ([ip4.ip4.ip4.ip4] helo=myhost.test.ex)
+ by myhost.test.ex with esmtp (Exim x.yz)
+ (envelope-from <CALLER@???>)
+ id 10HmbE-0005vi-00
+ for b@???; Tue, 2 Mar 1999 09:44:33 +0000
+DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=test.ex;
+ s=sel; h=From; bh=bzHKix52TV0ojCi2kd18gmIw/tcd5TnhO3QM+89xwyk=; b=LcQAFwKN9DL
+ wCbK0mcUtjmEoLaNUjwHmVrilQI1nBWJDoDUzpUl96U8YzdS/+Xut+pdS/YZf3m/Qbcw6ohO9pEmM
+ ncfURg55wr8fftAyRFA/L/svtP8h3Qv/+jv8gJ9nHyjk3z7Zmzzo8S54h9Ct9pJwkv0cpmdeLiDrL
+ ygZGjs=;
+Received: from CALLER by myhost.test.ex with local (Exim x.yz)
+ (envelope-from <CALLER@???>)
+ id 10HmbD-0005vi-00
+ for b@???; Tue, 2 Mar 1999 09:44:33 +0000
+From: nobody@???
+Message-Id: <E10HmbD-0005vi-00@???>
+Sender: CALLER_NAME <CALLER@???>
+Date: Tue, 2 Mar 1999 09:44:33 +0000
+
+content
+
+--
+This is a generic mailinglist footer, using a traditional .sig-separator line
+----
+
diff --git a/test/mail/4525.c b/test/mail/4525.c
new file mode 100644
index 0000000..1032c0d
--- /dev/null
+++ b/test/mail/4525.c
@@ -0,0 +1,52 @@
+From CALLER@??? Tue Mar 02 09:44:33 1999
+Received: from the.local.host.name ([ip4.ip4.ip4.ip4] helo=myhost.test.ex)
+ by myhost.test.ex with esmtp (Exim x.yz)
+ (envelope-from <CALLER@???>)
+ id 10HmbC-0005vi-00
+ for c@???; Tue, 2 Mar 1999 09:44:33 +0000
+DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=test.ex;
+ s=sel; h=From; bh=bzHKix52TV0ojCi2kd18gmIw/tcd5TnhO3QM+89xwyk=; b=LcQAFwKN9DL
+ wCbK0mcUtjmEoLaNUjwHmVrilQI1nBWJDoDUzpUl96U8YzdS/+Xut+pdS/YZf3m/Qbcw6ohO9pEmM
+ ncfURg55wr8fftAyRFA/L/svtP8h3Qv/+jv8gJ9nHyjk3z7Zmzzo8S54h9Ct9pJwkv0cpmdeLiDrL
+ ygZGjs=;
+Received: from CALLER by myhost.test.ex with local (Exim x.yz)
+ (envelope-from <CALLER@???>)
+ id 10HmbB-0005vi-00
+ for c@???; Tue, 2 Mar 1999 09:44:33 +0000
+From: nobody@???
+Message-Id: <E10HmbB-0005vi-00@???>
+Sender: CALLER_NAME <CALLER@???>
+Date: Tue, 2 Mar 1999 09:44:33 +0000
+
+content
+
+--
+This is a generic mailinglist footer, using a traditional .sig-separator line
+----
+
+From CALLER@??? Tue Mar 02 09:44:33 1999
+Received: from the.local.host.name ([ip4.ip4.ip4.ip4] helo=myhost.test.ex)
+ by myhost.test.ex with esmtp (Exim x.yz)
+ (envelope-from <CALLER@???>)
+ id 10HmbG-0005vi-00
+ for c@???; Tue, 2 Mar 1999 09:44:33 +0000
+DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=test.ex;
+ s=sel; h=From; bh=bzHKix52TV0ojCi2kd18gmIw/tcd5TnhO3QM+89xwyk=; b=LcQAFwKN9DL
+ wCbK0mcUtjmEoLaNUjwHmVrilQI1nBWJDoDUzpUl96U8YzdS/+Xut+pdS/YZf3m/Qbcw6ohO9pEmM
+ ncfURg55wr8fftAyRFA/L/svtP8h3Qv/+jv8gJ9nHyjk3z7Zmzzo8S54h9Ct9pJwkv0cpmdeLiDrL
+ ygZGjs=;
+Received: from CALLER by myhost.test.ex with local (Exim x.yz)
+ (envelope-from <CALLER@???>)
+ id 10HmbF-0005vi-00
+ for c@???; Tue, 2 Mar 1999 09:44:33 +0000
+From: nobody@???
+Message-Id: <E10HmbF-0005vi-00@???>
+Sender: CALLER_NAME <CALLER@???>
+Date: Tue, 2 Mar 1999 09:44:33 +0000
+
+content
+
+--
+This is a generic mailinglist footer, using a traditional .sig-separator line
+----
+
diff --git a/test/scripts/4500-DKIM/4525 b/test/scripts/4500-DKIM/4525
new file mode 100644
index 0000000..dced4ae
--- /dev/null
+++ b/test/scripts/4500-DKIM/4525
@@ -0,0 +1,54 @@
+# DKIM signing, with transport_filter
+#
+exim -bd -DSERVER=server -oX PORT_D
+****
+#
+# baseline (no transport_filter)
+exim -DOPT=From -odf a@???
+From: nobody@???
+
+content
+****
+millisleep 500
+#
+#
+# with transport_filter
+exim -DOPT=From -DFILTER=y -odf b@???
+From: nobody@???
+
+content
+****
+millisleep 500
+# with transport_filter and CHUNKING
+exim -DOPT=From -DFILTER=y -DALLOW=y -odf c@???
+From: nobody@???
+
+content
+****
+millisleep 500
+#
+# for comparison, mails that should get identical sigs, though not using a transport_filter
+exim -DOPT=From -odf b@???
+From: nobody@???
+
+content
+
+--
+This is a generic mailinglist footer, using a traditional .sig-separator line
+----
+****
+millisleep 500
+exim -DOPT=From -DALLOW=y -odf c@???
+From: nobody@???
+
+content
+
+--
+This is a generic mailinglist footer, using a traditional .sig-separator line
+----
+****
+millisleep 500
+#
+#
+killdaemon
+no_msglog_check
