An unknown mailbox name was specified or the mailbox backup was not found in the recovery database. Verify that the mailbox name is correct. If the specified mailbox name is correct, verify that it has been successfully backed up.
The mailboxes specified for the mailbox restore operation were not found in the Active Directory or in the mailbox history information stored on the TSM Server. If the specified mailboxes exist in Active Directory, then the database backup was not found.
The specified mailboxes are not restored.
Verify that the specified mailbox names are correct. Make sure that you are using the mailbox alias when specifying the mailbox names. After correcting the mailbox names, retry the mailbox restore operation. If this mailbox restore is for a deleted or moved mailbox, you might retry the mailbox restore operation using the 'MAILBOXOriglocation' option. Also, make sure that the database is restored into the recovery database properly. If specified mailbox name is correct, verify that it has been successfully backed up.