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    Devshed Newbie (0 - 499 posts)

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    Jun 2008
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    Microsoft DNS resolve to external IP for one domain


    I got 2 machines configured as below :

    Host name : Svr1 (window 2003 SP2)
    Domain Name : domainA.com
    Ip :

    Host name : Svr2 (window 2003 SP2)
    Domain Name : domainB.com
    Ip :

    Both machine is installed with DC and DNS services

    My issue is Svr1 is resolving wrong Ip address for DomainB.com.
    It's resolving to External Ip where it should be resolving internal IP. I have no idea why its resolving to External Ip.

    It can resolve properly svr2.domainB.com but not the domain FQDN.

    If i do Nslook from server SVR2 , it resolve properly the fqdn of DOmainB.com

    I have done all the trouble shooting but still not resolve. I have open a call with microsoft but they also did Not have the answer for this.

    Is there a way where we cand find where this server SVR1 getting this external Ip address. I have check in registry, dns cache, host file, other dns files, dns records...and the whole machine. I also check the firewall and router setting incase the server is taking their DNS ip.

    Also is there are any trick to fool the DNS to resolve the internal Ip instead of external IP. (putting the ip in host file, dont work)

    I need quick fix,,,Thanks for the help
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  3. Network Engineer
    Devshed Novice (500 - 999 posts)

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    Jun 2004
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    Are these domains in the same forest or domains in separate forests?

    There are two ways to get this done but here is the preferred:

    1) In the properties of DomainA's DNS, click the 'Forwarders' tab.
    2) Under 'DNS Domain' click 'New' and in the field enter the domain name you are trying to resolve and click 'OK'. The new domain should be highlighted in your list.
    3) Under that, enter the LAN IP address of DomainB's DNS server and click 'Add' and then 'Apply'.

    This will forward ALL requests for domainB to that server's LAN IP address...

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