I am having trouble removing Exchange Server 2003. Receive an error relating to mailboxes are in use on the server - this is not true. LDAP query resolves just the three norm mailboxes: SMTP; System Attendant, and SystemMailbox - System Managers yields the same result. SystemMailBox is the oly box with content. I've detached, and deleted from within System Manager - same error. Any thoughts before I spend $245.