There is a solution: http://www.synce.org/moin/ Please note that this reverse-engineered.

There is an alternative solution, which is even more interesting: Zarafa in combo with Z-Push (seehttp://www.zarafa.com/) which is a complete Exchange implementation including the Wireless sync. Some repositories cary it, as well as Fedora Core (starting from fc13). I have it running, and it does not consume many resources.

Jaap