Event ID 9042 and 9025 Service MSExchangeMailboxAssistants

Hi guys,

I have a small problem with these events. I have a lot of warnings with 9042 and I found out that information is contained in event id 9025, so far so good. I found that the problem is because of one old mailbox from a user who is no longer working in the company, also his mailbox doesn't appear in Disconnected Mailbox. I have a name and GUID but running Get-Mailbox returned only "The operation couldn't be performed because object '.....' couldn't be found on 'DC' because the account is removed from the AD. So how I could get rid of this mailbox in order to stop all these events? Thanks in advance

May 15th, 2015 4:11pm

Hi,

Please run Clean-MailboxDatabase to scan Active Directory for disconnected mailboxes that aren't yet marked as disconnected in the Microsoft Exchange store and update the status of those mailboxes in the Exchange store.

Then try to identity this mailbox with Get-Mailbox or via EMC and remove this mailbox.

If this doesnt help, please go to ADSIEdit and delete this mailbox directly.

Best Regards.

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May 18th, 2015 2:56am

Hi Lynn-Li,

Thank you for your answer. As I see from description of Clean-MailboxDatabase:

Use the Clean-MailboxDatabase cmdlet to scan Active Directory for disconnected mailboxes that aren't yet marked as disconnected in the Microsoft Exchange store and update the status of those mailboxes in the Exchange store. This cmdlet isn't able to update the Exchange store unless the Microsoft Exchange Information Store service is running and the database is mounted.

This means that I have to stop the service and un-mount the database, should watch out for something special? And another question - you said ADSIEdit - which section of field I should check? I know ADSIEdit, I'm not sure where inside it to look about this mailbox GUID. Thanks in advance

May 18th, 2015 3:25am

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