This could be getting ugly. I am migrating a SBS 2003 to SBS 2011, which appears to be going through the motions fairly well, and is now at the point where it is time to start turning off the old server. BUT... When I add a new user to the network using the SBS console, the user does not appear in active directory users and computers, nor does it create a malbox for the user. Still looking for the log file for more info on that, but the user can log in! I have looked for the new user on both the old and new server thinking it might be a replication thing, and in every folder visible in ADUC. I am unable to add a mailbox to the new user manually as wizard is unable to see the user to attach the mailbox to. I also discovered that when the old server is turned off, nobody can log in at all. Verified that DNS points to new server primary and old server secondary.