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  • Query another DNS server in a different Domain/LAN

    hi there,


    I want to know how can I configure my windows 2008 DNS server to query another DNS server in a different domain/LAN.

    So far the local domain computers can go to internet trough forwarders in DNS, and resolve local domain names, but I need them to resolve local domain names from the other domain/LAN. Both DNS servers are connected via VPN, but there is no trust relationship between the two domains.

    I want to use our local DNS server, and not having to change the HOSTS file on each domain computer machine.

    Can ping the remote DNS server but when I use nslookup tool on that remote DNS server I get the message

    "server: unknown DNS request time out."


    Any help is welcome, thanks.


    Silva

  • #2
    Re: Query another DNS server in a different Domain/LAN

    If you want the DNS server to query the other DNS server for it's internal domains then set up condiftional forwarders on your DNS server for the other domains.

    http://technet.microsoft.com/en-us/l...(v=ws.10).aspx

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    • #3
      Re: Query another DNS server in a different Domain/LAN

      I already tried that, setting conditional forwarders, but gives me always the message <unable to resolve>.

      The reverse lookup zone is not configured, can it be related to that?

      Silva
      Last edited by pmsilva; 27th September 2012, 18:09.

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      • #4
        Re: Query another DNS server in a different Domain/LAN

        No, it's not the rDNS zone as rDNS zones aren't used by AD.

        Have you enabled DNS communication (TCP and UDP port 53) through the firewall at both ends?

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        • #5
          Re: Query another DNS server in a different Domain/LAN

          Can a simple telnet to port 53 do the test?

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          • #6
            Re: Query another DNS server in a different Domain/LAN

            Run nslookup against the remote computer. If nslookup connects then the required ports are open through the firewalls.

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            • #7
              Re: Query another DNS server in a different Domain/LAN

              Thanks joeqwerty!! That did it.

              Had to do with the VPN rules.

              Thanks

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              • #8
                Re: Query another DNS server in a different Domain/LAN

                Glad to help.

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