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event id 2160 Recipient object read from failed validation and will be excluded RRS feed

  • Question

  • I'm getting an alert on my managed services portal for one of my clients that is giving me the following warning: Recipient object read from failed validation and will be excluded from the result set. and the details state:

    Process Microsoft.Exchange.ServiceHost.exe (EMS) (PID=4912). Recipient object CN=SystemMailbox{e0dc1c29-89c3-4034-b678-e6c29d823ed9},CN=Users,DC=bcscontrols,DC=local read from BCSAD.bcscontrols.local failed validation and will be excluded from the result set. Set event logging level for Validation category to Expert to get additional events about each failure.

    Now I went to look to see if the system mailbox was even there and when i checked the arbitration mailboxes, I get this:

    Name : SystemMailbox{bb558c35-97f1-4cb9-8ff7-d53741dc928c}

    Database : Mailbox Database 0751892043

    ServerName : bcsexch

    Name : Migration.8f3e7716-2011-43e4-96b1-aba62d229136

    Database : Mailbox Database 0751892043

    ServerName : bcsexch

    So to me, it looks like the ID of the system mailbox does not match. Is there any way to fix this?

    Friday, July 8, 2016 11:43 AM

Answers

All replies

  • That's the Discovery system mailbox.  You can try recreating it.  You may want to delete its object in ADU&C first.

    https://technet.microsoft.com/en-us/library/gg588318(v=exchg.150).aspx


    Ed Crowley MVP "There are seldom good technological solutions to behavioral problems."
    Celebrating 20 years of providing Exchange peer support!

    • Proposed as answer by Lynn-Li Monday, July 11, 2016 6:40 AM
    • Marked as answer by Lynn-Li Monday, July 25, 2016 1:51 AM
    Friday, July 8, 2016 4:35 PM
  • After looking in the active directory, I saw that there were two system mailbox accounts. One that shows in the alert that I am getting and the other which is showing in the EAC. I tried disabling the old one so that I could enable the other, but it has the OAB. I tried looking for a way to move the EAB to the new one, but could not find anything. Only to move it to a new server. Any ideas? Or should I just delete the OAB and not worry about it?
    Monday, July 11, 2016 1:52 PM
  • Unless the GUIDs are identical, the system mailboxes are probably for different purposes.  Depending on your version of Exchange, you'll have several system mailboxes.

    Ed Crowley MVP "There are seldom good technological solutions to behavioral problems."
    Celebrating 20 years of providing Exchange peer support!

    Tuesday, July 12, 2016 12:02 AM