We were having Windows2k3 AD Domain(DCA) controller and Win2K3 additinal doamin controller (DCB).
As we faced issues in DCB , we formatted and reinstalled and named it as DCC as the the system didn not accept the name DCB.
From then everything is working fine.
When we run the command DCDIAG from DCA it gives the below error and need you advice and support.
(CDIAG still searches DCB and not DCC
Event Type: Warning
Event Source: NtFrs
Event Category: None
Event ID: 13508
Time: 6:10:44 PM
The File Replication Service is having trouble enabling replication from OA00225A to DC00225A for c:\windows\sysvol\domain using the DNS name OA00225A.AD00225.local. FRS will keep retrying.
Following are some of the reasons you would see this warning.
 FRS can not correctly resolve the DNS name OA00225A.AD00225.local from this computer.
 FRS is not running on OA00225A.AD00225.local.
 The topology information in the Active Directory for this replica has not yet replicated to all the Domain Controllers.
This event log message will appear once per connection, After the problem is fixed you will see another event log message indicating that the connection has been established.
This is because AD thinks DCB is still active, just not talking. You need to remove all references to DCB from AD.