When adding a 2007 server to are current Exchange 2003 within are domain. I'm getting the following error dueing install. T he setup gets to Readiness Checks the errors : setup encountered a problem while validating the state of active directory: domain controller "server" OS verion is 5.0(2195) SP4 . The minimum verion required is 5.2 (3790) sp1 The server is a DC with windows 2000 SP4. I have another windows 2003 DC on the network and it has all the FSMO. Any help welcome

You have to specify the Win2003 SP1 DC manually when doing the installation.use setup.exe with the domaincontroler parameter "setup .... /DomainControler:Win2003SP1DC" http://technet.microsoft.com/en-us/library/aa997281.aspx http://technet.microsoft.com/en-us/library/bb125224.aspx