"Over 150 man-years of work were added to the Open Source community today when Zarafa decided to put their successful Exchange server replacement under GPLv3. This is not just the typical mail-server-that-works-with-Outlook, it is the whole package including 100% MAPI, web access, tasks, iCal and Activesync. (The native syncing works great with my iPhone!) Binaries and source are available for all major Linux distros."
http://linux.slashdot.org/article.pl?sid=08/09/19/2023252
http://linux.slashdot.org/article.pl?sid=08/09/19/2023252