I am scratching my head trying to figure out what is going on. This weekend I backed up all user data and servers and disconnected all 5 users from the domain. I then completely rebuilt the domain with SBS 2011. I went to each users computer... joined them to the domain. I then turned on Outlook 2010 and it worked like a charm. I then imported each users backed up PST into each users Outlook from their desktop. Works great. I made sure that each user had very large storage limits (30 gig each.. they will never get that high but since there is only 5 of them and a 2 terabyte server I wasnt worried about it). But 2 out of the 5 users are getting messages stating that their inbox is full (the warning says their inbox limit is 2gig). They are still getting email and sending but the error message in Outlook has them worried. How can I make this error message go away permanently?