Change Avaya Messaging to send MWI OFF when a mailbox is deleted. Per SOLN359354 , currently when you delete a mailbox that still has an unread message, AM sends MWI ON. This requires a clear amw all command to be sent before the station can be deleted in CM. It makes no sense to send an MWI ON when the mailbox is being deleted. There are no messages waiting if the mailbox does not exist.