I am planning on Upgrading a NT 4.0 PDC to windows 2003. This PDC is also running exchange 5.5. I am also setting up another 2k server which will be my file server.
The plan is to setup the second server first and add it to the NT 4.0 domain as a menber server. Then stop all the exchange services, upgrade the NT 4.0 to windows 2000 AD. Restart the exchange and test for mail flow.
Do u see any flaws in my plan.