DNS works fine for internally but unable to resolve external websites

20 pts.
Tags:
ISA 2006
OpenDNS
Windows Server 2000
I have a Windows 2003 server domain and around 50 users. While I was checking the DNS yesterday, I have found that its not resolving external websites from any of the domain computer. I checked through nslookup > www.google.com, I get the error DNS request time out timeout was 2 seconds request to pdc.mydomain.org timed-out. If I try to resolve internal computers then they resolve easily. When I set the external DNS servers (OpenDNS) on the forwarders of DNS, then it resolves with the message as non-authoritative answer: Please note that I am using OpenDNS along with ISA server 2006 for monitoring internet activity. Through ISA, it also resolves but with the same message non-authoritative answer. Please help
ASKED: July 20, 2013  9:39 AM
UPDATED: July 22, 2013  12:07 PM

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  • TomLiotta
    Through isa it also resolves but with the same message non-authorative answerIt's not clear what your question is nor what your problem is. Are you asking why you see a timeout that you described? Or are you concerned with "non-authoritative" replies? (Most DNS queries should probably result in "non-authoritative" replies unless the queries are about hosts within your own domain.)Tom
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  • Hunzian
    Dear Tom,Thanks for your reply at leat i have got a reply on this forum. Actually our main problem is that users are not able send emails through outlook. I have tried every thing through ISA like creating rules for smtp and adding dns rule as well. Emails works fine only if i set the users to use all the protcols from internal to external. This is what i don't want. I want to allow only the rules smtp and dns to send emails in outlook through ISA. While looking at our internal dns i observed that its not resolving the external ips and i have thought that it might be a problem with DNS. Ok fine if i get a reply as non-authorative but i get this message when i use the ips (opend) in the forwarders of our internal DNS server. I am asking that should internal DNS not reslove the external address. if yes then how can i repari the dns.once again thanks for your reply 
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