DCDIAG /test:DNS error message explanations?
Posted on 2014-07-14
I have a Windows 2008 domain with 2 DCs. Many moons ago this was actually a Windows 2003 domain which was upgraded to 2008 as per MS's instructions. Pre-upgrade the 'main' DC/DNS server was a box called OLDSERVER.
Running DCDIAG /TEST:DNS on both 2008 DCs there are a couple of errors shown - same 2 on each server - and I don't know what they mean or how to resolve them. They are
1. Root zone on this DC/DNS server was not found
2. TEST: Delegations (Del)
Delegation information for the zone: domain.company.com.
Delegated domain name: _msdcs.domain.company.com.
Warning: Delegation of DNS server OLDSERVER.domain.company.com. is broken on IP:<OLDSERVER's IP>
Error: DNS server: OLDSERVER.domain.company.com.
IP:<OLDSERVER's IP>[Broken delegation]
I used ADSI Edit to take a look around and if I go to Properties of the folder 'DC=domain,DC=company,DC=com' under Default Naming Context I see that there is a value in the Attribute Editor tab called 'domainReplica' which has the value 'OLDSERvER' - I've no idea if that is a clue but I'm guessing it should be there as OLDSERvER is (or should be) an old server acting as a file store and nothing else.
I might be stating the obvious but in the registry under HKLM-System--CurrentControlSet--Services--NTDS--Parameters there is also a key labelled 'Src Root Domain Srv' with the value of the FQDN of the OLDSERVER.
Can anyone advise on a suitable course of action to tidy this up a bit safely?
Thanks in advance.