Agent for Exchange supports the following versions of Microsoft Exchange Server:
Creating mailbox-level backups and recovering from mailbox-level backups of previous Exchange versions are not supported.
The Messaging API Client and Collaboration Data Objects (version 1.2.1) package must be installed. To download and install this package, visit http://www.microsoft.com/en-us/download/details.aspx?id=36771.
Hotfix http://support.microsoft.com/kb/908072 must be installed.
Note: It is important to keep your Exchange servers up-to-date. This ensures the best performance, integrity and security for all Exchange services and data.