Experienced some networking issues; specifically Active Directory is not authenticating.
Traced the problem back to expired domain name.
Renewed for another two years.
While at it checked DNS Servers to make sure that it is configured OK.
One of the freely available tools is pingdom.com; http://dnscheck.pingdom.com.
Superfluous name server listed at parent: ns2
A name server listed at the parent, but not at the child, was found. This is most likely an administrative error. You should update the parent to match the name servers at the child as soon as possible.
Our Domain Registrant has ns2 listed as one of our DNS Server.
But, it is not registered as a Name Server on our primary DNS Server.
Running MS Windows DNS Server and so everything is GUI.
Launched MMC – DNS, connect to DNS Server.
- Launched MMC
- Added DNS
- Connect to DNS Server
- Navigate to Forward Lookup Zones \ [Computer]
- Right click on the Domain Name
- From the drop-down menu, please select the Properties option
- Access the “Name Servers ” Tab
- Match the listed name servers to what you registered with your Domain Registrant
Returned to http://dnscheck.pingdom.com/ and confirmed that problem is resolved.
Tab – Basic View
Tab – Advanced View