R
RHM_19
Guest
Client has a Windows 2008 Server that is a Domain controller and also acts as their DNS server. It has a few forwarder IPs configured so that any internal request that comes, which the DNS Server is not able to handle, it goes to the forwarder IPs (e.g. 8.8.8.8 – Google’s public DNS is one of the forwarders. )
And I have tested that when I do a nslookup for any record that doesn’t exist in the internal records (e.g. yahoo.com) it gets resolved as expected because it goes to the Public DNS IPs via the forwarder IPs.
The challenge is that they have 2 DNS records in the internal DNS. They are internal A records in the DNS manager with an internal LAN IP Addresses against them. We were requested to delete those records and have done so. Since the record don't exist in the internal DNS anymore, the expectation is that now any internal request that comes for their name should go to the forwarder IPs and get resolved by the Public DNS IPs in there. This is not happening. What is happening is that we get an error saying "Can't find RecordName.mydomain Name. Non-Existent domain"
I have tried clearing the DNS Manager cache , tried restarting the DNS Service, tried restarting the server, but it still does not resolve that name to the correct IP from within the client’s network.
Note if I do an nslookup for RecordName.mydomain from outside their network then it correctly resolves to the correct IP. Its just not resolving from within their network even though it is configured correctly to send such requests to the DNS Forwarder IPs.
Any help would be most appreciated.
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And I have tested that when I do a nslookup for any record that doesn’t exist in the internal records (e.g. yahoo.com) it gets resolved as expected because it goes to the Public DNS IPs via the forwarder IPs.
The challenge is that they have 2 DNS records in the internal DNS. They are internal A records in the DNS manager with an internal LAN IP Addresses against them. We were requested to delete those records and have done so. Since the record don't exist in the internal DNS anymore, the expectation is that now any internal request that comes for their name should go to the forwarder IPs and get resolved by the Public DNS IPs in there. This is not happening. What is happening is that we get an error saying "Can't find RecordName.mydomain Name. Non-Existent domain"
I have tried clearing the DNS Manager cache , tried restarting the DNS Service, tried restarting the server, but it still does not resolve that name to the correct IP from within the client’s network.
Note if I do an nslookup for RecordName.mydomain from outside their network then it correctly resolves to the correct IP. Its just not resolving from within their network even though it is configured correctly to send such requests to the DNS Forwarder IPs.
Any help would be most appreciated.
Continue reading...