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exim4/README.DSN
Daniel Baumann 802ab461a9
Adding upstream version 4.98.2.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
2025-06-21 14:27:17 +02:00

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Exim DSN Patch (4.82)
---------------------
This patch 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.
This patch is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this patch; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111 USA.
Installation & Usage
--------------------
See docs/experimental-spec.txt
Credits
-------
The original work for the patch was done by Philip Hazel in Exim 3
The extract was taken and re-applied to Exim 4 by the following :-
Phil Bingham (phil.bingham@cwipapps.net)
Steve Falla (steve.falla@cwipapps.net)
Ray Edah (ray.edah@cwipapps.net)
Andrew Johnson (andrew.johnson@cwippaps.net)
Adrian Hungate (adrian.hungate@cwipapps.net)
Now Primarily maintained by :-
Andrew Johnson (andrew.johnson@cwippaps.net)
Updated for 4.82, improved and submitted to
http://bugs.exim.org/show_bug.cgi?id=118
by :-
Wolfgang Breyha (wbreyha@gmx.net)
Contributions
-------------
Andrey J. Melnikoff (TEMHOTA) (temnota@kmv.ru)
ChangeLog
---------
14-Apr-2006 : Changed subject to "Delivery Status Notification"
17-May-2006 : debug_printf in spool-in.c were not wrapped with #ifndef COMPILE_UTILITY
thanks to Andrey J. Melnikoff for this information
12-Sep-2006 : Now supports Exim 4.63
12-Sep-2006 : src/EDITME did not include the #define SUPPORT_DSN as stated
in the documentation, this has now been corrected
thanks to Robert Kehl for this information
28-Jul-2008 : New version for exim 4.69 released.
02-Jul-2010 : New version for exim 4.72 released.
25-Apr-2014 : Version 1.4
*) fix ENVID and ORCPT addition in SMTP transport
*) p was not moved to the end of the string. new content
added afterwards overwrites ENVID and/or ORCPT
*) change spool file format to be compatible with the
extensible format of exim 4 by prepending new values and
setting the extended bitmask accordingly
*) use SUPPORT_DSN_LEGACY=yes in Makefile to be able to read
the legacy format of older patches until all messages are out of queue.
*) change "dsn" boolean toggle to "dsn_advertise_hosts" to
be able to select who actually can use the extension
*) Add all RFC 3461 MUST fields to delivery-status section
*) convert xtext in ENVID
*) add all successful rcpts to ONE message instead of sending several messages
26-Apr-2014 : Version 1.5
fixes:
*) fixed wrong order for ENVID
*) fixed wrong Final-Recipient value
*) af_ignore_failure is ignored for success reports
*) fixed DSN_LEGACY switch
improvements:
*) added MIME "failure" reports
*) bounce_return_message is ignored (required by RFC)
*) in case RET= is defined we honor these values
otherwise bounce_return_body is honored.
*) bounce_return_size_limit is always honored.
*) message body intro and final text is ignored
*) do not send report if DSN flags say NO
*) added MIME "delay" reports
*) do not send report if DSN flags say NO
*) changed from SUPPORT_DSN to EXPERIMENTAL_DSN
*) updated documentation
01-May-2014 : Version 1.6
fixes:
*) code cleanup
*) use text/rfc822-headers were applicable
*) fix NOTIFY=FAILURE
improvements:
*) do not truncated MIME messages
*) if bounce_return_size_limit is smaller then the actual message
only the header is returned
*) if bounce_return_body or bounce_return_size_limit prevents Exim
from returning the requested (RET=FULL) body this fact is added
as X-Exim-DSN-Information Header
*) this also means that all of the last three parts of the "failure"
template are not used anymore
*) dsn_process switch removed
*) every router "processes" DSN by default
*) there is no possibility to "gag" DSN anymore since this violates RFC
*) dsn_lasthop switch added for routers
*) if dsn_lasthop is set by a router it is handled as relaying to a
non DSN aware relay. success mails are sent if Exim successfully
delivers the message.
*) redirect routers always "act" as if dsn_lasthop is set
*) address_item.dsn_aware changed from uschar to int for easier handling.
02-May-2014 : fixes:
*) Reporting-MTA: use smtp_active_hostname instead of qualify_domain from
original patch.
20-May-2014 : fixes:
*) removed support for EXPERIMENTAL_DSN_LEGACY for codebase inclusion
*) fixed build of exim_monitor tree
*) fixed late declaration of dsn_all_lasthop
-----------------
Support for this patch up to 1.3 (limited though it is) will only be provided through the SourceForge
project page (http://sourceforge.net/projects/eximdsn/)
From 1.4 onward feel free to ask on the exim-users mailinglist or add comments to
http://bugs.exim.org/show_bug.cgi?id=118