I recently Dcpromo'd a domain controller but I'm still seeing this on one of my new 2016 DC's. The old DC doesn't exist and I don't see any reference to it but for some reason, the new DC is still trying to replicate to it? I've googled some articles but can't seem to get an answer. When I run repadmin, I don't see it show up but it's obviously still somewhere in AD. AD replication is fine and I'm not seeing any errors except this one...
The DFS Replication service failed to communicate with partner SERVERNAME for replication group Domain System Volume. This error can occur if the host is unreachable, or if the DFS Replication service is not running on the server.
Partner DNS Address: SERVERNAME.domain.net
Optional data if available:
Partner WINS Address: SERVERNAME
Partner IP Address: 10.3.110.21
The service will retry the connection periodically.
Probably still an object in Sites and Services