Re: logonserver

Discussion in 'Server Networking' started by Meinolf Weber [MVP-DS], Sep 18, 2009.

  1. Hello griffinpet,

    Have you configured a FORWARDER in ALL DNS server properties to your ISPs
    DNS server?

    Best regards

    Meinolf Weber
    Disclaimer: This posting is provided "AS IS" with no warranties, and confers
    no rights.
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    > 10.0.1.x and 10.0.2.x are just member servers, no DCs there. SQL and
    > WEB servers.
    > The errors are gone but the authenticating server still alternates to
    > the dcs in Site A sometimes.
    > I really suspect DNS problems on the DC in Site B (PB-FS-01). From a
    > client in Site B with the DNS server set to I sometimes
    > get problems when I try to resolve certain domains and as a result I
    > cannot login to messenger or access certain sites.
    > If for example in nslookup I issue a query to it cannot
    > resolve. If I set the server to (the DC in Site A) it
    > resolves perfectly. I cannot understand this.
    > I checked DNS manager in both DCs running Win 2003 and they're
    > perfectly the same. The Win2000 DC in Site A has a few standard zones
    > that do not replicate to the other DCs but this should not have any
    > effect?
    > Should I demote PB-FS-01 and promote it again?
    Meinolf Weber [MVP-DS], Sep 18, 2009
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  2. "griffinpet" <> wrote in message
    > Hi again,
    > :) done now and external requests are being resolved. I thought that
    > root hints should have taken care of requests that could not be resolved
    > on each DC.
    > I demoted the DC in SiteB, removed the DNS server, promoted again and
    > was placed in the correct site when dcpromo was finished.
    > Tried to logon from a client again and guess what? logonserver still
    > reports DCs in SiteA :( this is driving me crazy.

    Actually demoting/promoting won't do it, especially if it may be doing the
    same thing after you've completed that task. It sounds like more a firewall
    block, such as blocking or not allowing UDP 53, or blocking ENDS0. What type
    of firewall are in place?

    Can you test it with nslookup? Say when you have a problem with a site, such
    as that or any domain, try:


    Then if that doesn't return a response, try the following command and then
    re-run the query:

    > set vc

    If that works, it tells me the EDNS0 is being blocked.

    You an also try prtquery from Microsoft. It will test open ports between

    Download details: PortQryUI - User Interface for the PortQry ...Aug 2, 2004
    .... PortQryUI - User Interface for the PortQry Command Line Port Scanner.
    Brief Description. Download PortQryUI.exe, an add on User Interface ...

    Quick Details - Overview - System Requirements - Instructions

    New features and functionality in portqry version 2.0portqry queries UDP
    port 1434 to query all the SQL Server named instances ...... Important The
    portqueryui tool provides a graphical user interface and is ...

    Ace Fekay [MCT], Sep 18, 2009
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