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DNS Web Address Issue

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by cpetroce 1 view

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I have what i am sure is a simple issue. I have an environment where the webserver is not on the local domain but hosted outsitde. The domain name and the website have the same name (ex: domain abc.com and website www.abc.com). The users on the inside on the domain are unable to hit this webaddress which i am sure is due to the lack of a DNS record or something simple. Please let me know if you have an idea....

Thanks in advance.

4 replies

by scott_heath

This is why MS does not recommend that an internal domain have the same name as the external domain. For your internal users you internal DNS servers are authoritative for the abc.com domain. You'll need to create a record manually to point www.abc.com to the outside address. We do the same thing at the company I work for now and I hate it. We have tons of little issues creep up because of the confusion it creates about what it internal and what is external.

by cpetroce

Good reply unfortunately i cannot use a specific address as the webserver is hosted and i don;t have a specific IP to reference. I am used to the larger environments where the webservers lay inside the network thus we never experience any issues with it.

Thanks for the reply.

by cg it

larger network thus no issues?

Conditional forwarders will always cause issues when the network domain name is the same as the public domain name. So network size doesn't have any bearing on it.

From Microsoft Technet:

You cannot use a domain name in a conditional forwarder if the DNS server hosts a primary, secondary, or stub zone for that domain name. For example, if a DNS server is authoritative for the domain name example.microsoft.com (hosts the primary zone for that domain name), then you cannot configure that DNS server with a conditional forwarder for example.microsoft.com.

So, your DNS server is authoritative for your private domain which has the same name as your public domain. Conditional forwarding therefore won't work eg forward the query if this condition is met = domain name.com.

I suggest you read the Microsoft Technet article Directing Queries through Forwarders.

Also see this article and at the bottom read all the related links.

http://technet2.microsoft.com/windowsserver/en/library/ee992253-235e-4fd4-b4da-7e57e70ad3821033.mspx?mfr=true

What to do to get your DNS to forward a LAN user query for your public domain name instead of your DNS server answering the query is in these articles.

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