I am in the process of upgrading to EX2000. I have 2 servers, a 5.5 and a 2000 server. I am using Move Mailbox in AD Users to move all the mailboxes to the new server. I have been fine for about 80% of the users. There is one user that I moved last night, now he can not get into his mailbox. In AD it says he is still on the old server, but when I setup outlook it pickes the new server as his server. I have tried to move this guy again, and I get a bunch of errors about no source mailbox found. Any Help??