I am having an issue on a customer site where I can join the domain if I use "blah". However if I use the full root domain "blah.co.uk" I get the error message below.
Where this is really an issue is promoting a new domain controller, it is required to resolve the FQDN. Exchange is also unable to resolve the domain and cannot receive emails.
If I ping "blah.co.uk" this works correctly.
DNS was successfully queried for the service location (SRV) resource record used to locate a domain controller for domain "blah.co.uk":
The query was for the SRV record for _ldap._tcp.dc._msdcs.blah.co.uk
The following domain controllers were identified by the query:
However no domain controllers could be contacted.
Common causes of this error include:
- Host (A) or (AAAA) records that map the names of the domain controllers to their IP addresses are missing or contain incorrect addresses.
- Domain controllers registered in DNS are not connected to the network or are not running.
In the event log there are logs such as:
The DNS server was unable to add or write an update of domain name Sales7 in zone blah.co.uk to the Active Directory. Check that the Active Directory is functioning properly and add or update this domain name using the DNS console. The extended error debug information (which may be empty) is "". The event data contains the error.
As well as this one which points towards it trying to register against a public DNS server:
The dynamic registration of the DNS record '422bc67f-c55f-461d-8f86-22d452011ec6._msdcs.blah.co.uk. 600 IN CNAME dc1.blah.co.uk.' failed on the following DNS server:
DNS server IP address: 126.96.36.199
Returned Response Code (RCODE): 5
Returned Status Code: 9017
For computers and users to locate this domain controller, this record must be registered in DNS.
Determine what might have caused this failure, resolve the problem, and initiate registration of the DNS records by the domain controller. To determine what might have caused this failure, run DCDiag.exe. You can find this program on the Windows Server 2003 installation CD in Support\Tools\support.cab. To learn more about DCDiag.exe, see Help and Support Center. To initiate registration of the DNS records by this domain controller, run 'nltest.exe /dsregdns' from the command prompt on the domain controller or restart Net Logon service. Nltest.exe is available in the Microsoft Windows Server Resource Kit CD.
Or, you can manually add this record to DNS, but it is not recommended.
Error Value: DNS bad key.
For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.