Tag Archives: Arbitration Mailboxes

This mailbox database contains one or more mailboxes

After moving all mailboxes from a mailbox database to other mailbox databases (both in Exchange 2016), including archive and arbitration mailboxes the mailbox database still cannot be deleted. Trying to remove the mailbox database still generates the following error message:

This mailbox database contains one or more mailboxes, mailbox plans, archive mailboxes, public folder mailboxes or arbitration mailboxes, Audit mailboxes. To get a list of all mailboxes in this database, run the command Get-Mailbox -Database <Database ID>. To get a list of all mailbox plans in this database, run the command Get-MailboxPlan.

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Get-Mailbox -Arbitration or Get-Mailbox -Archive doesn’t return anything.

Exchange 2016 introduced a new type of mailbox, the auditlog mailbox. This can be returned by the Get-Mailbox -Auditlog command:

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Move this auditlog mailbox to another mailbox database and the old mailbox is now fully empty and can be deleted.

Exchange 2013 Cumulative Update 11 – Install it or not?

On December 15, 2015 Microsoft has released Cumulative Update 11 (CU11) for Exchange Server 2013. Okay, I’m a little late with this one, but I wanted to wait some time to see what would happen with this CU….

Note. You can download Exchange 2013 CU11 at https://www.microsoft.com/en-us/download/details.aspx?id=50366, the accompanying UM Language Pack files can be downloaded from https://www.microsoft.com/en-us/download/details.aspx?id=50365 and this is the office Microsoft announcement: https://support.microsoft.com/en-us/kb/3099522. But please, read on before starting to download and install Exchange 2013 CU11.

Now, about this CU….. Microsoft introduced a new feature in CU11 called Mailbox Anchoring. This means that an Exchange Management Shell will no longer connect to the Exchange 2013 server you’re logged on to, but it will be proxied to the Exchange server hosting your current Mailbox. This can be challenging in a mixed environment.

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Exchange 2013 Recreate Arbitration Mailboxes

While testing with Exchange 2013 CU9 in our lab environment we utterly destroyed the DAG and after recreating the DAG and the Mailbox databases we found that the Arbitration Mailboxes were in a corrupt state. The accompanying user accounts were still available in Active Directory, but mandatory properties were incorrect. This was clearly visible when running a Get-Mailbox –Arbitration command:

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