Windows dns an unknown error occurred while validating the server
I'm having an issue trying to create a secondary forward lookup zone in Active Directory on one of my DCs.
Long story short, I can create a secondary forward lookup zone one way (add the copper.local zone to the blackberry.local DC) but not the other way (add the blackberry.local zone to the copper.local DC).
Another unbelievably (to put it mildly) basic test that I overlooked - bi-directional ping.
Their Cisco guy was recently doing some work with a new UC560 phone system and also working to use AD authentication for their RA VPN - the RADIUS server it referenced was setup on PARKSERV (problematic DC).
I would take any errors at this point just from a troubleshooting standpoint.
Also, I need to see why a secondary NIC IP that I deleted from the copper.local forward lookup zone and set the interface to not register in DNS still shows up in the secondary copper.local zone on the Boalsburg server after a successful zone transfer. I'm sure whatever it is, I'll get bit by it some day.
That change was replicated to the other copper.local domain controller. I'd be looking at the VPN configuration between sites now and verifying personally that the crypto maps and firewall rules actually do allow all traffic. And of course, the obvious launching of the DNS management console as Run As Administrator. I would also be using something like wireshark to see wtf is being passed to and fro. Posts in this and the Server Room forum have saved my bacon many a time. I'd be looking at the VPN configuration between sites now and verifying personally that the crypto maps and firewall rules actually do allow all traffic.