Arbitration Mailboxes Corrupted in Exchange 2010 “SystemMailbox has been corrupted, and it’s in an inconsistent state.”

2017-12-01T11:40:38+00:00 January 24th, 2013|Exchange|0 Comments

We had an issue recently where our customers Exchange 2010 servers arbitrations mailboxes had become corrupt and were giving the below errors when running “Get-mailbox –arbitration


WARNING: The object SystemMailbox{e0dc1c29-89c3-4034-b678-e6c29d823ed9} has been corrupted, and it’s in

an inconsistent state. The following validation errors happened:

WARNING: Database is mandatory on UserMailbox.

WARNING: Database is mandatory on UserMailbox.




To resolve this we had to run through the following steps

  • Open AD Users and Computers
  • Expand the Domain go to users OU
  • Find the following accounts and delete them
    • “SystemMailbox{e0dc1c29-89c3-4034-b678-e6c29d823ed9}”
    • “FederatedEmail.4c1f4d8b-8179-4148-93bf-00a95fa1e042”
    • “SystemMailbox{1f05a927-****-****-****-*******}” (Make a note of the Guid of previous system mailbox as it varies on every enviroment)
  • Open Command prompt navigate to your Exchange Setup files and run /preparead
  • Open the Exchange Management Shell and run the below
    • Enable-Mailbox –Arbitration –Identity “FederatedEmail.4c1f4d8b-8179-4148-93bf-00a95fa1e042”
    • Enable-Mailbox –Arbitration –Identity “SystemMailbox{e0dc1c29-89c3-4034-b678-e6c29d823ed9}”
    • Enable-Mailbox –Arbitration –Identity “SystemMailbox{1f05a927-****-****-****-*******}”  (Remember to change *** to your Guid)
    • Set-Mailbox –Arbitration –Identity “SystemMailbox{e0dc1c29-89c3-4034-b678-e6c29d823ed9}” –DisplayName “Microsoft Exchange”
    • Set-Mailbox –Arbitration –Identity “FederatedEmail.4c1f4d8b-8179-4148-93bf-00a95fa1e042” –ProhibitSendQuota 1MB

Your arbitration mailboxes should now be fine, run Get-Mailbox –arbitration to confirm and all should appear with no errors Smile

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