Open Source Exchange Compatible Alternative

Posted by on September 25, 2008 under Uncategorized |

UPDATE 2008.10.03:

So it looks like Travis was right, and an Outlook plug-in is needed - which means this system isn’t 100% compatible, although the ActiveSync part looks interesting.  That means the only100% solution I know of is still Post Path.  It just isn’t open source.  If Cisco would find a way to GPL it, they would literally TAKE OVER the market.  Maybe one day they will.

Original Post:
So someone FINALLY released a 100% MAPI compatible (read - Exchange compatible) system under an open source license.  Zarafa. At first read, it appears to offer full ActiveSync support, and Outlook over HTTPS as well.  The limitation appears to be in the number of Outlook clients that can connect via MAPI, unless you purchase one of the higher-end versions.

I’ll post an update after further evaluation.

http://zarafa.com/?q=en/content/community-0

Other 100% MAPI compatible alternatives include PostPath, which was recently aquired by Cisco.  But they aren’t (yet) open source.