With the release of Exchange 2007 SP2 we are providing a supportability matrix that identifies the various supported configurations of Exchange Server (operating system, Active Directory, Clients, ...
Updated Jul 01, 2019
Version 2.0
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We are 2003 AD and Exchange 2003SP2. We want to upgrade to 2008 R2 AD and after the AD upgrade go to either Exchange 2007 or 2010.
Can we put in the new 2008R2 DCs if we keep the 2003 DC's around and don't upgrade the functional level? After we do the upgrade, we could then get rid of the 2003 DC's.
I assume Exchange would be ok to point to the 2008 R2 DC's for DNS, just not Exchange services. Would we need to hard code the DCs Exchange can talk to?
Can we put in the new 2008R2 DCs if we keep the 2003 DC's around and don't upgrade the functional level? After we do the upgrade, we could then get rid of the 2003 DC's.
I assume Exchange would be ok to point to the 2008 R2 DC's for DNS, just not Exchange services. Would we need to hard code the DCs Exchange can talk to?