Hello, I just need clarification. We are running Exchange 2007 SP2 & Windows server 2008 Enterprise 64 bit edition and current Forest/Domain Functional level is windows server 2003 for all the server. we need to raise the Forest/Domain Functional level to windows 2008 native. Here i need to confirm if any impact/pre-requisite to be checked from the Exchange messaging side or anything needs to be change form exchange side? kindly help with questions I would be most Grateful. Thanks, Abhishek

Fully Supported: http://technet.microsoft.com/en-us/library/ff728623.aspx Exchange Server Supportability Matrix

Hi Abhishek, Based on my experience, the forest functional level change has no effect on the Exchange Organization in this scenario, (after you raise forest/Domain level to Windows 2008) Exchange Server can still work as before. Thanks, Evan Liu TechNet Subscriber Support in forum If you have any feedback on our support, please contact tngfb@microsoft.com Please remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.