Recently I have been working to migrate from my Exchange 2003 server to an Exchange 2007. I seemed to have gotten everything write based on a few different articles I looked at, but when I go to add remove programs to uninstall exchange 2003, I am told there are still mailboxes on that server. I found a technet article on how to go to active directory users and computers to do a search and look for users whose Exchange Home Server still lists my E2K3 Server. None did, though a new issue came up. I am currently showing two SystemMailboxes listed when I did a search on show only exchange recipients, users with exchange mailbox and both show an exchange home server of servers that have long been out of service. My question is, what do I need to do to clean those orphaned items up out of Active Directory? Can I simply delete them via Users and Computers or is there some ADSIEDIT tool or something I will need to use?
Once I get that straight I figure I can keep trying to figure out why I can't remove the E2K3 server.