Re-creating arbirtation mailboxes with Exchange 2013

To check the arbitration inboxes we issue:

Get-Mailbox -Arbitration

I encounted the following warning:

WARNING: The object domain.com/Microsoft Exchange System Objects/Monitoring Mailboxes/SystemMailbox35ea0e8476eb6c21b9c02c63c31 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.

In order to resolve this issue we will have to firstly delete the mailboxes and re-create them:

Open AD Users and Computers and Expand the Domain go to the Users OU and identify 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 environment)

Open Command prompt navigate to your Exchange Setup files and run setup.com /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

We should then verify the mailboxes with:

get-user -arbitration
get-mailbox -arbitration