I currently have an active directory environment where all of my domain controllers are Windows Server 2003 or later. I want to upgrade my domain and forest functional levels to Windows Server 2003 so that I can install Exchange 2010
My environment is fairly large and I believe I may have one or more Windows 2000 servers operating though they are NOT domain controllers. Will they be affected by this change? I'm looking to find some documentation from Microsoft that states this explicitly.