Event 9042 MSExchangeMailboxAssistants

Question

_{Monday, March 18, 2013 11:07 AM}

Hello

after a succesfull migration from exchange 2003 to exchange 2010 event 9042 will occur every 30 minutes :

Service MSExchangeMailboxAssistants. Junk E-mail Options Assistant for database Mailboxes (acb450cd-11e3-4c5e-b991-d3bc3937c5ab) is exiting a work cycle. No mailboxes were successfully processed. 1 mailboxes were skipped due to errors. There are 0 mailboxes in this database.

I didn`t find a solution yet.

What to do

All replies (4)

_{Monday, March 18, 2013 11:17 AM ✅Answered}

Hi,

this may be due to some disconnected mailbox.

Try

Clean-MailboxDatabase

follow this link and do the same steps.

If this post is useful, please hit the green arrow on the left.

Thanks

_{Monday, March 18, 2013 1:26 PM ✅Answered}

check this database for disconnected or moved mailboxes

Get-MailboxStatistics -Database DB01 | where {$_.DisconnectReason -ne $Null}

Remigiusz
ExchangeBlog

_{Monday, March 18, 2013 2:55 PM ✅Answered}

those mailboxes will remain until your retention time for deleted or moved mailboxes will expire. 

After this time "disconnected" mailboxes will be removed. 

you should find where is mailbox which causes mailbox assistant problem. 

and then you can try to dismount and mount this database. 

also you can try to restart service mailbox assistant.

Remigiusz
ExchangeBlog

_{Monday, March 18, 2013 1:55 PM}

I have tried both options.

There are some disconnected mailboxes. Is this a problem?

After clean-mailboxdatabase they are still available.

Is this possible without having the event?

Thx