Microsoft DNS and Yahoo Mail issue.

  • Thread starter Thread starter chrism
  • Start date Start date
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chrism

I recently changed our network to use the Windows 2000 DNS to resolve
external queries. We had forwarders set up to forward to MCI but those were
too slow to resolve.

So I removed the forwarders and now our serversare querying the root servers
directly.

Everything works fine except that I cannot access Yahoo mail. I can get
there by its IP address so I know there is some sort of DNS resolution
problem.

Anybody encounter this or know any nslookup command switches I can use to
find out if they're blocking our DNS lookups or anything like that ?

thanks.
 
In
chrism said:
I recently changed our network to use the Windows 2000
DNS to resolve external queries. We had forwarders set up
to forward to MCI but those were too slow to resolve.

So I removed the forwarders and now our serversare
querying the root servers directly.

Everything works fine except that I cannot access Yahoo
mail. I can get there by its IP address so I know there
is some sort of DNS resolution problem.

Anybody encounter this or know any nslookup command
switches I can use to find out if they're blocking our
DNS lookups or anything like that ?

thanks.
Click to expand...

What do you get when you use nslookup to resolve the yahoo mail name?
Use the d2 option and post the output so you can see what is happening when
it appends suffixes.
 
hi kevin,

this problem still persists. Could mail.yahoo.com block DNS queries from
Windows 2000/2003 DNS servers ?

Or might there be something going on with our firewall after I removed the
forwarders on our
DNS servers.

thank
 
In
chrism said:
hi kevin,

this problem still persists. Could mail.yahoo.com block
DNS queries from Windows 2000/2003 DNS servers ?

Or might there be something going on with our firewall
after I removed the forwarders on our
DNS servers.
Click to expand...

They can't block, but if you are using Win2k3 the problem may be an EDNS
issue, common with Win2k3 behind certain firewalls, especially if you have a
PIX firewall, which blocks UDP packets over 512 bytes. Some firewalls can be
modified to allow these packets, others you just have to disable EDNS on
Wib2k3.
828731 - An External DNS Query May Cause an Error Message in Windows Server
2003
http://support.microsoft.com/default.aspx?scid=kb;en-us;828731&Product=winsvr2003
 
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