If this issue occurs multiple times, submit a support incident online to Microsoft Online Services Support. Or, you can contact Microsoft Online Services Support by telephone and provide the following information:
- A copy of the NDR
- A message trace that displays the delivery failure
- A copy of the move statistics for the mailbox (get these by running the get-MoveRequestStatistics -mailboxGUID <MBXGUID> -Diagnostic -IncludeReport cmdlet)
Note You don’t remove the move request.
Article ID: 3176550 - Last Review: Jul 5, 2016 - Revision: 1