Original source may be found at: http://www.squirrelmail.org/plugin_view.php?id=52

Files: *
Copyright: © 2001-2008 Ron Chinn, Pat Winn, Paul Lesniewski
License: GPL-2
 This program is free software; you can redistribute it and/or modify it under
 the terms of the GNU General Public License version 2 as published by the Free
 Software Foundation.

Files: index.php
Copyright: © 1999-2004 The SquirrelMail Project Team
License: GPL-2
 This program is free software; you can redistribute it and/or modify it under
 the terms of the GNU General Public License version 2 as published by the Free
 Software Foundation.

Files: debian/*
Copyright: © 2008 Jan Hauke Rahm <jhr@debian.org>
License: GPL-2+
 This package 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.

On Debian systems, the complete text of the GNU General Public License
can be found in file "/usr/share/common-licenses/GPL-2". Possible later
versions are found within the same directory (e.g.
"/usr/share/common-licenses/GPL-3").
