Can you please tell me if your solution provides a bi-directional sync between MS Project Server (2007) and Exchange?
 
I'm looking for a solution which updates the Project Server Resources calendar with exceptions derived from none project related appointments in Exchange.
 

Yes, absolutely. The latest version of Allocatus Server synchronizes directly between My Tasks in Project Web Access 2007 and the user's appointments in Microsoft Exchange Server. Please note that this version with Exchange option is not available as download on this website. Please contact one of our partners in your region (see http://www.allocatus.com/Contact/en/)