This is Debian prepackaged version of masqmail, a small mail transport agent for hosts without permanent internet connection. Masqmail can be obtained from: http://marmaro.de/prog/masqmail This package is maintained by: Steffen Rumberger (Maintainer) Jan Hauke Rahm (Debian Developer) Markus Schnalke (Masqmail Developer) Upstream code: Copyright (C) 1999-2002 Oliver Kurth Copyright (C) 2008-2011 markus schnalke 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 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 St, Fifth Floor, Boston, MA 02110-1301, USA. On Debian GNU/Linux systems, the complete text of the GNU General Public License can be found in `/usr/share/common-licenses/GPL-2'. These files are licensed differently: src/md5/hmac_md5.* Copyright 2010, markus schnalke Permission to use, copy, modify, and/or distribute this software for any purpose with or without fee is hereby granted, provided that the above copyright notice and this permission notice appear in all copies. THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, 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. src/md5/md5.* Written by Solar Designer in 2001, and placed in the public domain. There's absolutely no warranty. src/libident/* Written by Peter Eriksson. This version of 'libident' is hereby released into the Public Domain. It may be distributed for a fee or without a fee. We only ask you not to pretend you wrote it. contrib/rmail Taken from postfix. Wietse Venema said that no license would apply to that file. See: http://lists.debian.org/debian-legal/2010/02/msg00043.html For details, have a look at the relevant files.