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  • DNS query not in Forward lookup zone

    Dears,

    I have installed windows 2008 R2 with DNS role.

    I have created a forward look-up zone containing host A
    a.domain.com pointing to a specific IP
    b.domain.com pointing to a specific IP

    Domain.com is a public domain.

    when i try to look-up for c.domain.com i am getting the blow:
    *** dns.domain.local can't find c.domain.com: Non-existent domain

    This is correct as i didn;t define c as host A,

    But c.domain.com already exists and it's public to anyone.

    My question is how should i configure my DNS server to look-up for public DNS is the host A in my predefined zone does not exists?

    Regards

  • #2
    Re: DNS query not in Forward lookup zone

    Hello,

    If domain.com is being hosted on an internal zone and external zone, that's known as split-DNS. When you are on your internal network and query for c.domain.com, if your internal DNS servers cannot find that record in their zone, name resolution stops. That is because your internal servers are also authoritative fo that domain zone. In a split-DNS design you have to add your external records to your internal zone as well. There is no work around for this design. The design is common and OK.

    I couldn't find an article on Petri's website discussing Split-DNS. see if this link helps you understand the concept..
    Last edited by [JM]; 14th February 2012, 15:55. Reason: add link..
    JM @ IT Training & Consulting
    http://www.itgeared.com

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    • #3
      Re: DNS query not in Forward lookup zone

      hi,

      Thank you for your explanation that was very helpful.

      Regards

      Comment


      • #4
        Re: DNS query not in Forward lookup zone

        Not a problem. Glad to have helped...
        JM @ IT Training & Consulting
        http://www.itgeared.com

        Comment

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