Confused SRV records in _sites and DNS entry comparison with AD Sites and Services

Discussion in 'DNS Server' started by Nathan, May 1, 2006.

  1. Nathan

    Nathan Guest

    Hi,

    We have a mixed mode domain with only Win2003 DC's. We have 15 sites but
    only 7 have DC's all running DNS.

    In the past we had sites created for all 15 sites in AD Sites and Services.
    After some reading I have now removed all sites except those with DC's (I
    still have subnets configured for all sites). But the sites still appear in
    Forward Lookup\domain\_msdcs\dc\_sites and Forward Lookup\domain\_sites. I
    have tried deleting out of DNS but they always come back after DNS restart.
    The sites deletion in ADS&S has replicated throughout the network as do all
    DNS updates. There are no errors in the Event Log.

    Also, what should appear in each of the Forward
    Lookup\domain\_msdcs\dc\_sites\SiteName\_tcp? For some of the sites with a
    DC only a _ldap and _kerberos SRV record appear with the name of the DC for
    the site (I would assume this is correct). In other sites with DC's all SRV
    records for all DC's appear (I reckon this is wrong). And for those site
    entries that I think shouldn't be there they have SRV entries for all DC's.

    Running DCDIAG and NETDIAG do not produce any errors. I really only picked
    this up because I saw a client logon and pick up a DC that wasn't at the
    logon site and I am assuming (again) that the reason is because of the
    above.

    I am at a complete loss as to what should appear in my DNS when I compare it
    with AD Sites and Services and what SRV records should appear for each DNS
    entry.

    Thanks

    Nathan
     
    Nathan, May 1, 2006
    #1
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  2. Just for the curious

    I found the problem. In the past we must have filled in this option in GP,
    'Sites Covered by the DC Locator DNS SRV Records' and these sites were
    entered in this policy.

    This caused the sites to be recreated every time they were deleted and the
    service restarted.

    Thanks

    Nathan
     
    Nathan Simpson, May 7, 2006
    #2
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