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Thread: DNS not resolving!!!!

  1. #1
    pgn1977@yahoo.com.au Guest

    DNS not resolving!!!!

    Hello! I have a problem where I have 2 Domains in different forests (no
    trust). Both Domains have DNS running and that works fine for when the
    computers are working from their own domain however if a computer from
    domain A connects to the Domain B Network the DNS no longer works. DHCP
    is working fine and it is selecting the correct DNS server from that
    domain but the nslookup is still trying to use the dns from the other
    network.

    Anyone got any ideas????? Really stuck here. Grrrrrrr


  2. #2
    Jorge Silva Guest

    Re: DNS not resolving!!!!

    Hi

    Inline

    > however if a computer from
    > domain A connects to the Domain B Network the DNS no longer works.


    what do you mean with this?? The DNS stops working? what exactly does the
    client describe all steps?

    > DHCP
    > is working fine and it is selecting the correct DNS server from that
    > domain but the nslookup is still trying to use the dns from the other


    - Make sure that you configure the Preferred DNS server in TCP/IP properties
    on each Domain Controller to use itself as Primary DNS Server (If DC IP
    Address is 10.0.0.1 then Dns should be 10.0.0.1).When adding an additional
    DC to an existent Domain, do not configure the domain controller to utilize
    its own DNS service for name resolution until you have verified that both
    inbound and outbound Active Directory replication is functioning and up to
    date. During the DCPromo process, you must configure additional domain
    controllers to point to another domain controller that is running DNS in
    their domain and site, and that hosts the namespace of the domain in which
    the new domain controller is installed. More Info here:
    Best practices for DNS client settings in Windows 2000 Server and in Windows
    Server 2003

    http://support.microsoft.com/kb/825036/en-us

    - Make sure that every DNS server can resolve all existent domains in the
    forest. (You can use Forwarding, Stub Zones or Secondary Zones).
    DNS Conditional Forwarding in Windows Server 2003
    http://www.windowsnetworking.com/art...rver_2003.html

    - Make sure that all clients only use their local(s) Dns Server. Note That
    DNS client does not utilize each of the DNS servers listed in TCP/IP
    configuration for each query. By default, on startup the DNS client will
    attempt to utilize the server in the Preferred DNS server entry. If this
    server fails to respond for any reason, the DNS client will switch to the
    server listed in the alternate DNS server entry. The DNS client will
    continue to use this alternate DNS server until: fails to respond to a DNS
    query, or The ServerPriorityTimeLimit value is reached (15 minutes by
    default). For more information:

    Best practices for DNS client settings in Windows 2000 Server and in Windows
    Server 2003
    http://support.microsoft.com/kb/825036/en-us
    How to configure TCP/IP to use DNS in Windows XP
    http://support.microsoft.com/default...b;en-us;305553



    --
    I hope that the information above helps you

    Good Luck
    Jorge Silva
    MCSA
    Systems Administrator

    <pgn1977@yahoo.com.au> wrote in message
    news:1154496116.133967.138340@s13g2000cwa.googlegroups.com...
    > Hello! I have a problem where I have 2 Domains in different forests (no
    > trust). Both Domains have DNS running and that works fine for when the
    > computers are working from their own domain however if a computer from
    > domain A connects to the Domain B Network the DNS no longer works. DHCP
    > is working fine and it is selecting the correct DNS server from that
    > domain but the nslookup is still trying to use the dns from the other
    > network.
    >
    > Anyone got any ideas????? Really stuck here. Grrrrrrr
    >




  3. #3
    skhips Guest

    Re: DNS not resolving!!!!

    Hi,

    I am quite new at this so please use these comments to brain storm rather
    than take as gospel, to achieve what you are tying to do we we have played
    with two ways, one is create a secondary dns zone "copy zone" of e.g domain 1
    onto two and domain 2 onto domain 1, including reverse zones, another was to
    point their dns .root to a higher domain that would then act as the point to
    find all the resoloution, I beleive stub zones is another way in W2K3 only
    but not looked at that. We did have trusts in between forests but I dont
    think that was needed for the DNS

    "Jorge Silva" wrote:

    > Hi
    >
    > Inline
    >
    > > however if a computer from
    > > domain A connects to the Domain B Network the DNS no longer works.

    >
    > what do you mean with this?? The DNS stops working? what exactly does the
    > client describe all steps?
    >
    > > DHCP
    > > is working fine and it is selecting the correct DNS server from that
    > > domain but the nslookup is still trying to use the dns from the other

    >
    > - Make sure that you configure the Preferred DNS server in TCP/IP properties
    > on each Domain Controller to use itself as Primary DNS Server (If DC IP
    > Address is 10.0.0.1 then Dns should be 10.0.0.1).When adding an additional
    > DC to an existent Domain, do not configure the domain controller to utilize
    > its own DNS service for name resolution until you have verified that both
    > inbound and outbound Active Directory replication is functioning and up to
    > date. During the DCPromo process, you must configure additional domain
    > controllers to point to another domain controller that is running DNS in
    > their domain and site, and that hosts the namespace of the domain in which
    > the new domain controller is installed. More Info here:
    > Best practices for DNS client settings in Windows 2000 Server and in Windows
    > Server 2003
    >
    > http://support.microsoft.com/kb/825036/en-us
    >
    > - Make sure that every DNS server can resolve all existent domains in the
    > forest. (You can use Forwarding, Stub Zones or Secondary Zones).
    > DNS Conditional Forwarding in Windows Server 2003
    > http://www.windowsnetworking.com/art...rver_2003.html
    >
    > - Make sure that all clients only use their local(s) Dns Server. Note That
    > DNS client does not utilize each of the DNS servers listed in TCP/IP
    > configuration for each query. By default, on startup the DNS client will
    > attempt to utilize the server in the Preferred DNS server entry. If this
    > server fails to respond for any reason, the DNS client will switch to the
    > server listed in the alternate DNS server entry. The DNS client will
    > continue to use this alternate DNS server until: fails to respond to a DNS
    > query, or The ServerPriorityTimeLimit value is reached (15 minutes by
    > default). For more information:
    >
    > Best practices for DNS client settings in Windows 2000 Server and in Windows
    > Server 2003
    > http://support.microsoft.com/kb/825036/en-us
    > How to configure TCP/IP to use DNS in Windows XP
    > http://support.microsoft.com/default...b;en-us;305553
    >
    >
    >
    > --
    > I hope that the information above helps you
    >
    > Good Luck
    > Jorge Silva
    > MCSA
    > Systems Administrator
    >
    > <pgn1977@yahoo.com.au> wrote in message
    > news:1154496116.133967.138340@s13g2000cwa.googlegroups.com...
    > > Hello! I have a problem where I have 2 Domains in different forests (no
    > > trust). Both Domains have DNS running and that works fine for when the
    > > computers are working from their own domain however if a computer from
    > > domain A connects to the Domain B Network the DNS no longer works. DHCP
    > > is working fine and it is selecting the correct DNS server from that
    > > domain but the nslookup is still trying to use the dns from the other
    > > network.
    > >
    > > Anyone got any ideas????? Really stuck here. Grrrrrrr
    > >

    >
    >
    >


  4. #4
    Kevin D. Goodknecht Sr. [MVP] Guest

    Re: DNS not resolving!!!!

    pgn1977@yahoo.com.au wrote:
    > Hello! I have a problem where I have 2 Domains in different forests
    > (no trust). Both Domains have DNS running and that works fine for
    > when the computers are working from their own domain however if a
    > computer from domain A connects to the Domain B Network the DNS no
    > longer works. DHCP is working fine and it is selecting the correct
    > DNS server from that domain but the nslookup is still trying to use
    > the dns from the other network.


    You mean it is using the DNS servers from the other domain?
    It's likely a group policy on the other domain setting the DNS server list,
    the DNS server list from a group policy overrides those from DHCP or even
    manually configured DNS servers. I believe you'll find it in the registry
    here:
    HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows NT\DNSClient



    --
    Best regards,
    Kevin D. Goodknecht Sr. [MVP]
    Hope This Helps
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