The following commands can be used to move or delete the system mailboxes:
Move system mailboxes to another database:
Get-Mailbox -Arbitration -Database QUELLDB | New-MoveRequest -TargetDatabase ZIELDB
Deactivate system mailboxes
Get-Mailbox -Arbitration -Database QUELLDB | Disable-Mailbox -Arbitration
Delete system mailboxes and delete AD account:
Get-Mailbox -Arbitration -Database QUELLDB | Remove-Mailbox -Arbitration -RemoveLastArbitrationMailboxAllowed
To recreate the system mailboxes if the AD account has also been deleted, the Exchange data carrier (or the unzipped file) must contain
setup.com /prepareAD
can be called up.