My root DCs "cannot find the domain controller for domain" for a sub-domain. I'm unable to add a conditional forwarder for the sub-domain in my root DC DNS manager.
Error :"A problem occurred while trying to add the conditional forwarder. A zone configuration problem occurred".
Also, when I input the domain name and IP of the two sub-domain DCs I get Error: "The server with this IP is not authoritative for the required zone".
The FSMO roles are as follows:
Root - company.com
Root DC1 = Domain naming master (for both root/sub domains), PDC, RID pool manager
Root DC2 = Schema master (for both root/sub domains), Infrastructure master
Subs - sub.company.com
Sub DC_1 = PDC, RID Pool manager
Sub DC_2 = Infrastructure master
All users and resources are located in the sub-domain.
I'm getting 1908 and 1256 errors when running DCDIAG from root DCs (Source: Sub DC_1). I can ping both FQDN and IPs of sub-domain DCs from my root DC, but they can't replicate. This may be a bit confusing so if you need some additional detail please let me know specifics as I'm not too versed on DNS or active director.