Copyright for courier source package in Xenial

This package was debianized by Dennis Schoen  on
Sat,  7 Oct 2000 14:04:43 +0200.

It was downloaded from:
ftp://courier.sourceforge.net/pub/courier/courier/

Upstream Author:

Sam Varshavchik 
Double Precision, Inc.
PO Box 668
Greenwood Lake, NY 10925

Copyright:

Copyright 1998 - 2008 Double Precision, Inc.

This software is released under the GPL, version 3.
Additionally, compiling, linking, and/or using the OpenSSL toolkit in
conjunction with this software is allowed.

A copy of the GNU General Public License is available as
/usr/share/common-licenses/GPL-3 in the Debian GNU/Linux distribution or on the
World Wide Web at http://www.gnu.org/copyleft/gpl.html.  You can also
obtain it by writing to the Free Software Foundation, Inc., 51 Franklin St,
Fifth Floor, Boston, MA 02110-1301, USA.