I have a company that is running Exchange 2007 with 10 users. One of those users is experiencing a message in the morning when he starts outlook 2003 that says that his mailbox was not closed properly. He gets this message about 3 times a week. Once he accepts the message all is well and he does not have any more problems. I have removed his exchange connection and reconnected it and that has not helped. Does anyone have any other ideas what could be causing this message? None of the other users are getting the message.