I had moved my windows 2003 domain controller which was running exchange 2003 to a different server running the same thing. After I confirmed that everything was running properly I decomissioned the old server. 3 months later the new server died. It's a long story but I do not have a backup. The old server is still a domain controller and exchange server in the domain. I have tried quite a few things to try and revert back to the old server but I am still having problems. My main priority is to get exchange running. I am able to add a user in active directory and assign the new mailbox to the old server but in ESM the mailbox does not show up. Has anyone had a similar situation like this that could give me some advice?