I have a domain with three domain controllers on three different sites. Two of the domain controllers have DFS setup between them
The servers are :
WIN-ADC-SRVR1 which is in the main office and holds the FSMO roles and has DFS setup to WIN-ADC-SRVR2
WIN-ADC-SRVR2 which is in the factory and has DFS setup to WIN-ADC-SRVR1
WIN-ADC-SRVR3 which is located in another office and is used for just local logon authentication.
Since Sunday the AD replication has stopped working and so has the DFS replication on the data folder that is setup between WIN-ADC-SRVR1 AND WIN-ADC-SRVR2 but it would seem that active directory replication is working between WIN-ADC-SRVR1 AND WIN-ADC-SRVR3.
I have checked DNS and all seems to be working there and the servers can resolve each other via IP address and FQDN and even the SID listed in the DNS server.
Nothing has changed with the VPN links between the sites and although the links are just ADSL the data sent between the office and the factory server is only very small and there has never been a problem of this scale.
If anyone can provide any information that could help me with this issue, it would be greatly appreciated. If logs are needed please let me know.
I have already attached the dcdiag log as well as the dcdiagDNS and repadmin tests from each server