I have a problem when installing Exchange Server 2007. My client has an existing Exchange 2000 server, two Windows 2000 domain controllers and two new Windows 2003 domain controllers.
The Exchange Server 2007 installation is not a new setup. The following is the error I receive when Exchange 2007 is doing a readiness check:
Hub Transport Role Prerequisites
Setup encountered a problem while validating the state of Active Directory: Domain Controller 'flounder.SIMTech.a-star.edu.sg' Operating System version is 5.0 (2195) Service Pack 4. The minimum version required is 5.2 (3790) Service Pack 1.
flounder.SIMTech.a-star.edu.sg is the Windows 2000 DC.
Any help would be appreciated.