I have a domain with three 2008 DCs with the domain function level and forest function level at 2000. In the domain is an 2000 Exchange Server. We are wanting to migrate to Exchange 2010. We are going to have to upgrade the 2000 Exchange Server to 2003 Exchange first.
My question is can I run the Exchange 2003 setup /domainprep and setup /forestprep on a 2008 domain controller. I can't find a solid answer. If I cannot, then my plan would be to add a 2003 DC to the domain until I can prep the AD and then remove it later.