I have a client with a SBS 2003 server, but it seems the domain was setup using DCPROMO instead of the normal SBS way and Exchange was manually installed. The server has been up for 4 months and is running ok for the most part, but I recently went to add a new user and they could not connect and was getting licensing message in the Event viewer, so after some research I realized what was done. I was able to remove a couple users not there anymore and reboot and get that user to connect, but she only worked for a day and then was getting blocked from connecting to Exchange and was getting the licenses errors again. It is a rather small site (12 users), so I am not so concerned about the basic user setup, but I am concerned about Exchange and the users mailboxes. Anyone know if SBS install is smart enough to fix this screw up or the best way to go about getting this issue resolved?