Microsoft DNS and Yahoo Mail issue.

[chrism]

Archived from groups: microsoft.public.win2000.dns (More info?)

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.

 

[Guest]

Archived from groups: microsoft.public.win2000.dns (More info?)

In news:uZVkiowfEHA.3700@TK2MSFTNGP12.phx.gbl,
chrism <chris@no_spam> wrote their comments
Then Kevin replied below:
> 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.

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.

--
Best regards,
Kevin D4 Dad Goodknecht Sr. [MVP]
Hope This Helps
================================================
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[chrism]

Archived from groups: microsoft.public.win2000.dns (More info?)

Thanks for the reply.

I get a time-out on nslookup mail.yahoo.com

I just found this article which explains what is going on.
It's a DDos attack on their DNS servers and also heavy load on their servers
after upgrading paid user accounts:

http://www.eweek.com/article2/0,1759,1612739,00.asp


"Kevin D. Goodknecht Sr. [MVP]" <admin@nospam.WFTX.US> wrote in message
news:eiaFDtwfEHA.2416@TK2MSFTNGP09.phx.gbl...
> In news:uZVkiowfEHA.3700@TK2MSFTNGP12.phx.gbl,
> chrism <chris@no_spam> wrote their comments
> Then Kevin replied below:
> > 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.
>
> 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.
>
> --
> Best regards,
> Kevin D4 Dad Goodknecht Sr. [MVP]
> Hope This Helps
> ================================================
> --
> When responding to posts, please "Reply to Group"
> via your newsreader so that others may learn and
> benefit from your issue, to respond directly to
> me remove the nospam. from my email address.
> ================================================
> http://www.lonestaramerica.com/
> ================================================
> Use Outlook Express?... Get OE_Quotefix:
> It will strip signature out and more
> http://home.in.tum.de/~jain/software/oe-quotefix/
> ================================================
> Keep a back up of your OE settings and folders
> with OEBackup:
> http://www.oehelp.com/OEBackup/Default.aspx
> ================================================
>
>

 

[chrism]

Archived from groups: microsoft.public.win2000.dns (More info?)

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


"Kevin D. Goodknecht Sr. [MVP]" <admin@nospam.WFTX.US> wrote in message
news:eiaFDtwfEHA.2416@TK2MSFTNGP09.phx.gbl...
> In news:uZVkiowfEHA.3700@TK2MSFTNGP12.phx.gbl,
> chrism <chris@no_spam> wrote their comments
> Then Kevin replied below:
> > 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.
>
> 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.
>
> --
> Best regards,
> Kevin D4 Dad Goodknecht Sr. [MVP]
> Hope This Helps
> ================================================
> --
> When responding to posts, please "Reply to Group"
> via your newsreader so that others may learn and
> benefit from your issue, to respond directly to
> me remove the nospam. from my email address.
> ================================================
> http://www.lonestaramerica.com/
> ================================================
> Use Outlook Express?... Get OE_Quotefix:
> It will strip signature out and more
> http://home.in.tum.de/~jain/software/oe-quotefix/
> ================================================
> Keep a back up of your OE settings and folders
> with OEBackup:
> http://www.oehelp.com/OEBackup/Default.aspx
> ================================================
>
>

 

[chrism]

Archived from groups: microsoft.public.win2000.dns (More info?)

never mind, that's an old article !


"chrism" <chris@no_spam> wrote in message
news:eFZ9MzwfEHA.2812@tk2msftngp13.phx.gbl...
> Thanks for the reply.
>
> I get a time-out on nslookup mail.yahoo.com
>
> I just found this article which explains what is going on.
> It's a DDos attack on their DNS servers and also heavy load on their
servers
> after upgrading paid user accounts:
>
> http://www.eweek.com/article2/0,1759,1612739,00.asp
>
>
> "Kevin D. Goodknecht Sr. [MVP]" <admin@nospam.WFTX.US> wrote in message
> news:eiaFDtwfEHA.2416@TK2MSFTNGP09.phx.gbl...
> > In news:uZVkiowfEHA.3700@TK2MSFTNGP12.phx.gbl,
> > chrism <chris@no_spam> wrote their comments
> > Then Kevin replied below:
> > > 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.
> >
> > 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.
> >
> > --
> > Best regards,
> > Kevin D4 Dad Goodknecht Sr. [MVP]
> > Hope This Helps
> > ================================================
> > --
> > When responding to posts, please "Reply to Group"
> > via your newsreader so that others may learn and
> > benefit from your issue, to respond directly to
> > me remove the nospam. from my email address.
> > ================================================
> > http://www.lonestaramerica.com/
> > ================================================
> > Use Outlook Express?... Get OE_Quotefix:
> > It will strip signature out and more
> > http://home.in.tum.de/~jain/software/oe-quotefix/
> > ================================================
> > Keep a back up of your OE settings and folders
> > with OEBackup:
> > http://www.oehelp.com/OEBackup/Default.aspx
> > ================================================
> >
> >
>
>

 

[Guest]

Archived from groups: microsoft.public.win2000.dns (More info?)

In news:uGUzPUxfEHA.2536@TK2MSFTNGP09.phx.gbl,
chrism <chris@no_spam> wrote their comments
Then Kevin replied below:
> 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.

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



--
Best regards,
Kevin D4 Dad Goodknecht Sr. [MVP]
Hope This Helps
================================================
--
When responding to posts, please "Reply to Group"
via your newsreader so that others may learn and
benefit from your issue, to respond directly to
me remove the nospam. from my email address.
================================================
http://www.lonestaramerica.com/
================================================
Use Outlook Express?... Get OE_Quotefix:
It will strip signature out and more
http://home.in.tum.de/~jain/software/oe-quotefix/
================================================
Keep a back up of your OE settings and folders
with OEBackup:
http://www.oehelp.com/OEBackup/Default.aspx
================================================

 

[Guest]

Archived from groups: microsoft.public.win2000.dns (More info?)

c> Could mail.yahoo.com block DNS queries from
c> Windows 2000/2003 DNS servers ?
c> Or might there be something going on with our firewall [...]

<URL:http://homepages.tesco.net./~J.deBoynePollard/FGA/dns-edns0-and-firewalls.html>