I'm getting this warning messages with event ID "13508" on my child domain Primary DC.
Server is having three roles on this dc :PDC , RID, Infrastructure.
Root Doamin : Schema and Domain Role
Event Type: Warning
Event Source: NtFrs
Event Category: None
Event ID: 13508
Time: 7:14:49 PM
The File Replication Service is having trouble enabling replication from PPGBPDC01 to PPGDC01 for c:\windows\sysvol\domain using the DNS name ppgbpdc01.ppg.cementhai.co
m. FRS will keep retrying.
Following are some of the reasons you would see this warning.
 FRS can not correctly resolve the DNS name ppgbpdc01.ppg.cementhai.co
m from this computer.
 FRS is not running on ppgbpdc01.ppg.cementhai.co
 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.
For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp