Answer: Arbitration Mailboxes are mailboxes that requires all emails send to specific recipient to be approved before by a moderator.
In order to create we need to use the Exchange Shell.
To configure a Arbitration Mailbox follow the steps below:
Open Exchange Shell and create the Arbitration Mailbox using the following command.
New-mailbox modmail –arbitration -userprincipalname firstname.lastname@example.org
To convert existing mailbox to arbitration mailbox do the following:
Enable-mailbox –identity testuser –arbitration
To view all Arbitration mailboxes run the following cmdlet.