Re: DNS forwarding

Tech-Archive recommends: Repair Windows Errors & Optimize Windows Performance

From: DevGD (DevGD.18q0c5_at_mail.mcse.ms)
Date: 07/01/04 

Date: Thu, 1 Jul 2004 09:14:20 -0500

Was there ever a solution to the problem? I have the same problem.

Thanks
DevGD

Kevin D. Goodknecht [MVP] wrote:
> *In news:OCQHae$DEHA.3088@tk2msftngp13.phx.gbl,
> ppp <ppp@nospam.ppp> posted a question
> Then Kevin replied below:
> > Kevin D. Goodknecht [MVP] wrote:
> >
> >
> >
> > Forwarders: (1) 203.2.75.132 and 198.142.0.51, (2) 210.15.254.240
> and
> > 210.15.254.241 (I think)
> >
> >
> >
> > I have removed the forwarders and yes the root hints do work.
> > However, our DNS server started behaving well shortly before
> removing
> > the forwarders anyhow - we were down for quite a few hours despite
> > restarting the server and stopping/restarting the DNS service.
> > External name resolution sporadically worked for moments here and
> > there at that time. Note that our ISP Internet service was not
> down
> > at all: by using a proxy server or manually setting the client to
> use
> > the ISP's DNS server, external connectivity worked fine with no
> loss
> > packets whatsoever during testing.
>
> Just to be sure, I checked these servers to verify they were doing
> recursive
> queries, which they are.
>
> Make sure that "Secure cache against pollution" is checked on the
> Advanced
> tab. The next time DNS fails try clearing the cache on your DNS
> servers To
> verify it is not cache pollution.
>
> If you have not checked "Do not use recursion" on the forwarders tab,
> even
> if the forwarders fail, DNS should continue to resolve using
> recursion.
>
> On a side note, if the Win2k3 is behind a router or firewall, take a
> look at
> the below KB article to disable EDNS extensions. This has been a
> fairly
> common issue with Win2k3 DNS, what happens is Win2k3 DNS supports
> UDP
> packets that exceed 512 bytes, many firewalls will reject these
> packets and
> cause external DNS resolution to fail.
> 828731 - An External DNS Query May Cause an Error Message in Windows
> Server
> 2003
> http://tinyurl.com/259s3
>
>
> --
> Best regards,
> Kevin D4 Dad Goodknecht Sr. [MVP]
> Hope This Helps
> ============================
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--
DevGD
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