Hi, I'm trying to install Exchange 2007 RTM on a Windows 2003 SP2 server in a test domain with only a Windows 2008 domain controller, but I can't get past the pre-requisites of setup. I get the error that there are no Windows 2003 SP1 or higher global catalog servers available. How can I fix this ? Do I need an Windows 2003 DC ? Franc.

It should be supported but untill Windows 2008 RTMs you can't be sure http://msexchangeteam.com/archive/2007/08/16/446709.aspx Did you try with Exchange 2007 SP1 beta 2 Deli

Hi, According to the docs and blogs Exchange 2007 RTM is supported with Windows 2008 domain controllers, but with Windows 2008RC0 it clearly isn't. Today I downloaded Exchange 2007 SP1 beta and that one install fine. Franc.