expedia.msn.com does not resolve

[Kevin Darcy]

Barry Margolin wrote:

> In article <9lencv$16j at pub3.rc.vix.com>,
> Kevin Darcy  <kcd at daimlerchrysler.com> wrote:
> >
> >Cinense, Mark wrote:
> >
> >> >From inside the firewall expedia.msn.com does not resolve, however from
> >> outside the firewall it does.  If you try to resolve ibm.com, or hp.com it
> >> works.  I had networking sniff the packets, and could not find anything.
> >> Does someone have any ideas why this would happen?
> >
> >Not sure. It took my nameserver more than 5 seconds to resolve that name. The
> >CNAME + 13 Answer A records + 12 NS records + 12 Additional A records of
> >course do not fit in a UDP packet and thus require a TCP retransmission.
> >Perhaps all of these retransmissions are overloading their nameservers
>
> Since the problem only occurs behind his firewall, maybe his firewall
> doesn't allow TCP DNS requests through.

Yeah, talk about overlooking the obvious. Duh!

(It seems I was overly preoccupied trying to tie together this poster's problem
with the microsoft.com mail problem I had yesterday...)


- Kevin