I am trying to install Exchange 2010 on a new server. We currently have Exchange 2003 installed on another server, and Windows 2003
domain controller(s). At one point I did have a test exchange 2007 server installed that is no longer online due to a hardwre failure. I am getting the error:
Coexistence between Exchange Server 2010 and Exchange Server versions older than Exchange Server 2007 SP2 in the same Active Directory Site is not supported.
Click here for help... http://go.microsoft.com/fwlink/?linkid=30939&l=en&v=ExBPA.14&id=fb049413-b962-4973-a1b2-a62a81ef8691
Any thoughts? I have tried to do the setup /prepare.. with Exchange 2007, same issue.