Can anyone tell me how to regain the 15-20Gb of disk space that I have (apparently) removed from the Exchange Server mail store ? I've archived about 15-20Gb of emails and attachments to a separate off C: location, but this is not being reflected in free & available up disk space. How do I regain the space previously occupied by the greedy users' INBOXs ? I have already tried to re-boot the server - to no avail. WOuld it help to dismount and remout the mail store ??