Thanks for replying manjunath. I have run repadmin and replmon. No Access denied messages and all replication stats for all replication partners looks to be correct. One thing I did notice however is I created a dummy text file in the sysvol directory on the DC in Site B and it did NOT replicate to any other replication partners. This DC in site B is already a GC. The other thing to mention is that the link between outlook client and local GC in site A is via a 10Mb hub. The link between the Domain controller (GC) in Site B and the DC / Exchange server in Site A is a 2Mb link. Site replication is scheduled to occur every 15 minutes.