Many customers have been asking on what is supported on various Exchange versions like operating system, Active directory environment, web browsers, Clients and others and the answer to them is Exchange Supportability Matrix.

The Exchange Server Supportability Matrix provides a central source for Microsoft Exchange administrators to easily locate information about the level of support available for any configuration or required component for all versions of Microsoft Exchange.

Find the matrix at http://technet.microsoft.com/en-us/library/ff728623.aspx?ocid=soc-n-SA-loc-services-omers