We have migrated form Exchange 2003 to Exchange 2010 a year ago with no issues. All Exchange legacy servers uninstalled with no issues. We had an issue today were emails sent to mail-enabled public folder was returning NDRs. This happened on two or three and then trickled down thorugh several public folders. This client has several public folders and uses them for business processes. There have been 100s of incidents now.
Symtoms:
E-mail messages that been sent to mail-enabled public folder in Exchange Server 2010 environment rejected with the following NDR:
#554 5.2.0 STOREDRV.Deliver.Exception:ObjectNotFoundException; Failed to process message due to a permanent exception with message The Active Directory user wasn't found. ObjectNotFoundException: The Active Directory user wasn't found. ##
We are getting the following Event log messages on Hub transport servers.
Log Name: Application
Source: MSExchange Store Driver
Date: 5/29/2014 2:45:53 PM
Event ID: 1020
Task Category: MSExchangeStoreDriver
Level: Error
Keywords: Classic
User: N/A
Computer: xxxxxx
Description:
The store driver couldn't deliver the public folder replication message "Backfill Request (xxxxxxx)" because the following error occurred: The Active Directory user wasn't found..
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
<System>
<Provider Name="MSExchange Store Driver" />
<EventID Qualifiers="49156">1020</EventID>
<Level>2</Level>
<Task>1</Task>
<Keywords>0x80000000000000</Keywords>
<TimeCreated SystemTime="2014-05-29T18:45:53.000000000Z" />
<EventRecordID>168407</EventRecordID>
<Channel>Application</Channel>
<Computer>xxxxxx</Computer>
<Security />
</System>
<EventData>
<Data>"Backfill Request (xxxxxxx)"</Data>
<Data>The Active Directory user wasn't found.</Data>
</EventData>
</Event>
Actions:
We have executed the following steps.
1. Start the ADSI Edit MMC Snap-in. Click Start, then Run, and type adsiedit.msc, and then click OK.
2. Connect & Expand the Configuration Container [YourServer.DNSDomainName.com], and then expand CN=Configuration,DC=DNSDomainName,DC=com.
3. Expand CN=Services, and then CN=Microsoft Exchange, and then expand CN=YourOrganizationName.
4. You will see an empty Administrative Group. Expand the CN=YourAdministrativeGroupName.
5. Expand CN=Servers.
6. Verify there are no server objects listed under the CN=Servers container.
7. Right click on the empty CN=Servers container and choose Delete.
8. Verify the modification, and try to send again the E-mail to the mail-enabled public folder.
To no avail the issue still exists.
We have not rebooted the servers and plan to in the early morning.
We have dismounted/mounted public folder DBs
Does anyone have any other suggestions?
Danny Kennedy, MCSE, MCITP