Corrupted or Deleted Mailboxes
Exchange offers a deleted-items recovery option. Deleted items are retained for 14 days after the deleted items folder is emptied. These items can be recovered without local or system admin intervention.
There are rare occasions when mailboxes may become corrupted. In this case, in order to regain data, the departmental system admin needs to request a restore from the backup system. The backup system retains data for 7 days.
Mailboxes that have been deleted can be reconnected within 30 days of deletion.
Request a mailbox restoration or reconnection using the Exchange request form.