W2k3 DNS and Name Resolution Problems

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From: Nordic (NoSpam_at_spamaway.com)
Date: 11/22/04 

Date: Mon, 22 Nov 2004 08:43:15 -0800

Hello:

I have a network of about 70 users with a combination of Windows XP, Mac
OS (X and 9x), and Linux clients. Recently we moved from statically
assigned public address space to a NATed private address space. We also
moved DNS in house (Windows Server 2003, no AD yet) and setup DHCP on
that server.

Users are complaining of two problems that might be related:

First, there are some public addresses that do not resolve on the first
attempt. For example, the user will type in a website in the browser and
get a page not found error. Then they click refresh and it comes up. This
happens on machines of all flavor OS.

Second, we are getting strange 503 SMTP errors when sending to some
public addresses. Remote servers are complaining of not getting a Helo or
Ehlo. My hunch is that the mail server is saying helo but sendings own
incorrect name (e.g., mail.company.com.company.loc). When you query pubic
and internal DNS, the proper address is returned. Nothing has changed in
the mail server config.

I have setup W2k3 DNS on many networks and not seen this. DNS server
points to itself for DNS and forwards to the ISP's DNS servers. The
server hosts two zones: company.loc (internal addresses) and company.com
(only A records for the few public services that sit inside the network
like mail.company.com).

I have put a sniffer on the network and am not sure what to look for. Any
thoughts about where to look or what might be going on.

Thanks.

Relevant Pages

  • Re: NT Domain to AD migration
    ... Windows 2000/XP always prefer Kerberos authentication, ... Server 2003 Active Directory service, ensure that you have designed a DNS ...
    (microsoft.public.windows.server.active_directory)
  • RE: Printing from Win9x clients stops
    ... Open Server Management. ... then right-click the name of the computer running Windows Small Business ... >From the client computer: ... The Select Network Component Type ...
    (microsoft.public.windows.server.sbs)
  • RE: Printing from Win9x clients stops
    ... The printers with 9x drivers on the server appeared automatically in the ... > then right-click the name of the computer running Windows Small Business ... > From the client computer: ... The Select Network Component Type ...
    (microsoft.public.windows.server.sbs)
  • Re: Secondary DNS and PIX
    ... Of course I updated them with the DNS ... WINDOWS SERVER 2003 FOR SMALL BUSINESS SERVER, ... Windows SBS 2003 SP1 is available. ...
    (microsoft.public.windows.server.sbs)
  • Re: Find AD hostname from Linux command line
    ... The Windows XP workstation gets an IP ... "Register this connection's addresses in DNS" turned ON. ... If I am on a Linux server and do "ping lancelot.ad.mydomain.com", ...
    (microsoft.public.win2000.dns)