Question: How To Remove Arbitration Mailbox From Exchange 2010

If you are trying to uninstall Exchange Server 2010 and you receive an error message telling you that you need to delete or move the Arbitration Mailbox you have to option.

Option one is to delete it by running the following cmdlet from EMS

Get-Mailbox -Arbitration -Database DB101 | Remove-Mailbox -Arbitration -RemoveLastArbitrationMailboxAllowed

If you have another Exchange Server you can move it:

Get-Mailbox -Arbitration -Database DB101 | New-MoveRequest -TargetDatabase db2