This is Debian GNU/Linux's prepackaged version of exim, a powerful yet easy
to configure mail transport agent.

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This package was put together from the original sources which are
maintained by Philip Hazel <ph10@cus.cam.ac.uk>, and which were
obtained from

	https://downloads.exim.org/exim4/

Some modifications to the Makefiles have been made to fit with the Linux
FHS.
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The exim content filtering extension, formally known as the
exiscan-acl patch, and which is included in exim4-daemon-heavy,
was written by Tom Kistner <tom@duncanthrax.net>.
/* Copyright (c) Tom Kistner <tom@duncanthrax.net> 2003-???? */
/* License: GPL */
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Debian Maintainer history:
- The Debian package for exim was originally made by Tim Cutts
  <timc@chiark.greenend.org.uk>.
- Mark Baker <mbaker@iee.org> took over until exim version 3 and is
  still involved with packaging.
- Steve Haslam, Hilko Bengen and Marc Haber generated the initial
  packages of Exim v4.
- The exim4 packages are currently maintained by
  - Core Team
    - (mh) Marc Haber <mh+debian-packages@zugschlus.de> (team leader)
    - (am) Andreas Metzler <ametzler@downhill.at.eu.org> (uploader)
  - Commit Privileges
    - (hb) Hilko Bengen <bengen@debian.org> (documentation, hacks etc)
    - (cb) Christian Perrier <bubulle@debian.org> (translations)

The following people helped in preparing the exim4 packages and gave
important feedback:
- Marc Merlin provides the dlopen patch, making it possible to load
  local_scan-routines for a external shared object.
  The original patch was written by David Woodhouse, it was modified first
  by Derrick 'dman' Hudson and afterwards by Marc Merlin.
- Sander Smeenk provided the TLS-docs and the script to generate the
  self-signed certificates.
- The people on the exim4debian list that submitted bug-reports and -fixes,
  and helped with design issues: Matthias Klose, Alexander Koch, Ola
  Lundqvist, Andrew Mulholland, David Pashley, Andreas Piesk, Nick Phillips
  and whoever I forgot to mention.
- syslog2eximlog script by Martin Godisch.
- Hilko Bengen converted the Debian documentation from plain-text to XML
  format.
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exim is Copyright (c) 1995 - 2018 University of Cambridge.
        Copyright (c) 2006-2020 The Exim Maintainers

The original licence is as follows (from the file NOTICE in the upstream
distribution); a copy of the GNU GPL version 2 is available in
/usr/share/common-licenses/GPL-2 on Debian systems.

_________________________________________________________________________
THE EXIM MAIL TRANSFER AGENT
----------------------------

Copyright (c) 2004 University of Cambridge

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.

In addition, for the avoidance of any doubt, permission is granted to
link this program with OpenSSL or any other library package and to
(re)distribute the binaries produced as the result of such linking.

This program 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 program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.


UNSOLICITED EMAIL
-----------------

The use, supply or promotion of Exim for the purpose of sending bulk,
unsolicited electronic mail is incompatible with the basic aims of the program,
which revolve around the free provision of a service that enhances the quality
of personal communications. The author of Exim regards indiscriminate
mass-mailing as an antisocial, irresponsible abuse of the Internet.


INCORPORATED CODE
-----------------

A number of pieces of external code are included in the Exim distribution.

 .   Support for the cdb (Constant DataBase) lookup method is provided by code
     contributed by Nigel Metheringham of Planet Online Ltd. which contains
     the following statements:
     _________________________________________________________________________

     Copyright (c) 1998 Nigel Metheringham, Planet Online Ltd

     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.

     This code implements Dan Bernstein's Constant DataBase (cdb) spec.
     Information, the spec and sample code for cdb can be obtained from
     http://www.pobox.com/~djb/cdb.html. This implementation borrows some code
     from Dan Bernstein's implementation (which has no license restrictions
     applied to it).
     _________________________________________________________________________

     The implementation is completely contained within the code of Exim. It
     does not link against an external cdb library.

 .   Client support for Microsoft's "Secure Password Authentication" is pro-
     vided by code contributed by Marc Prud'hommeaux. Server support was
     contributed by Tom Kistner. This includes code taken from the Samba
     project, which is released under the Gnu GPL.


 .   Support for calling the Cyrus "pwcheck" and "saslauthd" daemons is
     provided by code taken from the Cyrus-SASL library and adapted by
     Alexander S. Sabourenkov. The permission notice appears below, in
     accordance with the conditions expressed therein.

     _________________________________________________________________________

     Copyright (c) 2001 Carnegie Mellon University. All rights reserved.

     Redistribution and use in source and binary forms, with or without
     modification, are permitted provided that the following conditions are
     met:

     1.   Redistributions of source code must retain the above copyright
          notice, this list of conditions and the following disclaimer.

     2.   Redistributions in binary form must reproduce the above copyright
          notice, this list of conditions and the following disclaimer in the
          documentation and/or other materials provided with the distribution.

     3.   The name 'Carnegie Mellon University' must not be used to endorse or
          promote products derived from this software without prior written
          permission. For permission or any other legal details, please
          contact

            Office of Technology Transfer
            Carnegie Mellon University
            5000 Forbes Avenue
            Pittsburgh, PA  15213-3890
            (412) 268-4387, fax: (412) 268-7395
            tech-transfer@andrew.cmu.edu

     4.   Redistributions of any form whatsoever must retain the following
          acknowledgment:
             This product includes software developed by Computing Services at
             Carnegie Mellon University (http://www.cmu.edu/computing/).

     CARNEGIE MELLON UNIVERSITY DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
     SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
     FITNESS, IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY BE LIABLE FOR ANY
     SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
     RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
     CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
     CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
     _________________________________________________________________________


 .   The Exim Monitor program, which is an X-Window application, includes
     modified versions of the Athena StripChart and TextPop widgets. This code
     is copyright by DEC and MIT, and their permission notice appears below,
     in accordance with the conditions expressed therein.

     _________________________________________________________________________

     Copyright 1987, 1988 by Digital Equipment Corporation, Maynard,
     Massachusetts, and the Massachusetts Institute of Technology, Cambridge,
     Massachusetts.

                                All Rights Reserved

     Permission to use, copy, modify, and distribute this software and its
     documentation for any purpose and without fee is hereby granted, provided
     that the above copyright notice appear in all copies and that both that
     copyright notice and this permission notice appear in supporting documen-
     tation, and that the names of Digital or MIT not be used in advertising
     or publicity pertaining to distribution of the software without specific,
     written prior permission.

     DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
     ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
     DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
     ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
     WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
     ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
     SOFTWARE.
     _________________________________________________________________________


 .   Some of the code to support the use of maildirsize files for maildir
     deliveries is taken from the Courier Imapd source code. This code is
     released under the GPL.
     _________________________________________________________________________

--
Philip Hazel            University of Cambridge Computing Service,
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src/pdkim/*

PDKIM - a RFC4871 (DKIM) implementation
http://duncanthrax.net/pdkim/
Copyright (C) 2009 - 2016  Tom Kistner <tom@duncanthrax.net>
Copyright (C) 2016 - 2020  Jeremy Harris <jgh@exim.org>

This copy of PDKIM is included with Exim. For a standalone distribution,
visit http://duncanthrax.net/pdkim/.
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