DNS not forwarding microsoft.com

Discussion in 'Windows Small Business Server' started by Anthony in Melnourne, May 3, 2004.

  1. Hi,

    The DNS server in my (relatively) fresh installation of
    WinServer2003-SBS will not forward requests to resolve
    almost any microsoft.com addresses.

    The DNS server IS configured for dns-forwarding (to our
    ISPs DNSs), and indeed this works fine for every other URL
    clients request resolution for, except for microsoft.com

    All client PCs have the SBS IP as their primary DNS IP,
    and our ISPs DNS as their secondary-DNS IP (both set via
    DHCP), so eventually the secondary-DNS is queried and
    works, but the SBS-server has only its own IP as its only
    DNS IP, so it eventually times out when attempting to go
    to any x.microsft.com URLs.

    Any ideas!???
    Anthony in Melnourne, May 3, 2004
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  2. To work around this problem, turn off EDNS0 support in Windows Server 2003.
    To do this, follow these steps:
    1.. Start a command prompt.
    2.. Type dnscmd /Config /EnableEDnsProbes 0, and then press ENTER.
    SuperGumby [SBS MVP], May 3, 2004
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  3. I would look at Mick's ideas first but. On all of my installs the
    workstations look to the SBS for all dns info. Everything. They have
    only one dns entry and that is the internal ip of the SBS. The SBS has
    forwarders set to the isp dns. Everything that the SBS cannot resolve
    it resolves by using the isp dns or root hints.

    Jim B. SBS MVP
    remove the mvp to send email
    Jim Behning SBS MVP, May 3, 2004
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