Site not working through Transparent Proxy

I have a site that will not load through transparent proxy at one of my buildings.
I have 2 buildings with same BM setup (3.9SP2 on NW6.5 SP7). At one location, I can not resolve a web site when running through transparent proxy.
At the other location, it works just fine.
Also, if I set the proxy to either BM server, the site loads without incident.
As another note, both locations use the same internal DNS server which is located in the building where transparent proxy works for this site.
What am I missing?
Any ideas as to what to try next is greatly appreciated.

On 03/16/2010 03:26 PM, sjdimare wrote:
>
> Thanks for the reply. Both BM servers are using the same proxy.cfg file
> - Craig Johnson's - revision 30.
>
> I ran a lan trace on 2 separate PCs from the different networks.
>
> On the working network, you can see the DNS lookup in the wireshark
> log.
>
> In the network where it is not working, there is no DNS entry even
> showing that it is trying to resolve the domain name. Other sites are
> working just fine and you can see the DNS entry going to our internal
> DNS server.
>
> In the non-working segment, if I hard set the proxy, you see an HTTP
> entry going to the proxy server and resolving the domain in question.
>
> Very strange.
>
> Any new ideas are greatly appreciated.
>
> Steve D.
>
>
Then the pc failing has problem to resolve the entry. When you force the
browser, pc does not resolve anything, just send the url to bm and bm
resolve it. With TP, it is the PC who makes it. It could be that this pc
has already cached this site. But then you should see the reqesut goign
to the bm server. Without seeing the traces ( i do not understand your
there is no DNS entry even
showing that it is trying to resolve the domain name,) i can not comment
in more detail other that you've got a PC or network problem or dns
problem with this particular site, but not a bm.
if trace shows dns query from the pc and no answer, but is really
strange, do the same step but this time take a lan trace on the dns
server to confirm that request is received and what it does with it.

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