Sub domain no longer around

Posted on 2005-04-12
Last Modified: 2012-05-05
Here is the situation:

DC for blah.local is having issues because it cannot communicate with a DC from a subdomain called sub.blah.local. That server was moved to another location and now communication between the two is much more limited. Users report strange connectivity issues on both sides since they seem to not communicate well. Both servers are Win 2K, SP4, all patched up nicely.

My temporary fix was to move the users that are on sub.blah.local domain controller to another DC that has no part in this AD structure and their connectivity problems have dissapeared but I still have a server generating a ton of errors in the System log.

Same thing applies to blah.local, who cannot communicate with sub.blah.local. However, users there have no other domain to fall back to and they seem to have more problems with Exchange shutting down services every so often more than communication problems.

Should I remove the sub server from AD Site and Services, should I remove any trust relationships among the two, or what should I do?
Question by:edentone
    LVL 35

    Expert Comment

    by:Nick Sui
    What exactly your problem is? How DNS Servers and Clients settings are configured? How many domain controllers you have in both the domains? How many sites? You do not need to configure Trusts between domains because trusts between windows 2000 domains are transitive and two-way.

    Tell your network structure.

    Let me know.
    LVL 3

    Author Comment

    The problem is that the logs keep referring to a replication attempt between the two DCs. The actual text is:

    Event Type: Error
    Event Source: NETLOGON
    Event Category: None
    Event ID: 5719
    Date: 4/13/2005
    Time: 1:40:15 AM
    User: N/A
    Computer: SISYPHUS
    No Windows NT or Windows 2000 Domain Controller is available for domain
    SERVICES. The following error occurred:
    There are currently no logon servers available to service the logon request.
    0000: 5e 00 00 c0 ^..À

    The question is how to either get these two domains to see each other again, or how to remove the subdomain from syncing with the main domain.
    LVL 35

    Accepted Solution

    First correct the DC SRVs and then i will post later for second issue.

    To verify DNS registration for domain controllers using the nslookup command

    1. Open Command Prompt.
    2. Type:
    3. After the previous command completes, at the nslookup (">") prompt type:
    set q=rr_type
    4. After the previous command completes, type:
    5. Review the output of the previous SRV query and determine if further action is needed based on whether the previous query succeeded or failed:

    Ref: -

    Follow any or all steps to re-register DC SRVs: -

    1. Run netdiag /fix
    2. Run dcdiag /fix
    3. manually import DC SRVs from \windows\system32\config\netlogon.dns
    4. or follow these steps: -

    Please follow the steps. Everything should work fine: -

    1. Stop Netlogon service.
    2. Open DNS Console.
    3. Delete Active Directory Integrated Zone.
    4. Stop and Start DNS Service.
    5. Close and Re-open DNS Console.
    6. Re-create DNS Zone (domain_name)
    7. Start Netlogon service.
    8. issue ipconfig /registerdns.

    Let me know.
    LVL 3

    Author Comment

    I will try it out tomorrow and post what happens. Thanks!
    LVL 3

    Author Comment

    Problem solved thanks to your tips.
    LVL 35

    Expert Comment

    by:Nick Sui

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