You have upgraded from Microsoft Exchange 2003 to Microsoft Exchange 2010. You may now find that you cannot email any of you mail enabled public folders. When you attempt to email the mail enabled public folder you see the error below in an NDR.
There’s a problem with the recipient’s mailbox. Please try resending the message. If the problem continues, please contact your help desk.Diagnostic information for administrators:Generating server: email@example.com
#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. ##
and also you will see Event ID: 1020
This is down to the servers container in the first organization not being removed during the uninstallation of exchange 2003. As we know sometimes we have to adsi edit out the servers, you also need to remove the servers container. Here we will remove this container.
Run adsiedit from the run box then navigate to the below.
CN=Configuration , CN=Services, CN=Microsoft Exchange, CN=[YourExchangeOrganisationName], CN=Administrative Groups, CN=[LegacyAdministrativeGroupName], CN=Servers.
Remove the Servers container by right click and select delete.
Then restart your Microsoft Exchange Topology service and mail will start to flow.
Tags: adsi edit