Hi, One of my friend is facing problem related excahgne 2003. Problem started when his exchange server disk gets full and his mail flow topped. After that he freed up the space and remount the database as it was dismounted when space gets filled. Now the problem is that when outlook users trying to open there mail they got dialog box of user name and password for opening mail. And after giving user name and password mailis notopening while users are easily able to login into the domain. Outlook users are confiured with pop-3 options to send and recieve the mail. His exchange server is DC in its own. Please suggest solution. Thanks Sunil