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Receiving 504 Proxy Timeout Error when trying oto connect out to a HTTPS locked down URL

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Last Modified: 2012-06-27
I am trying to connect out to a secured locked down https URL and receiving the following message on my browser:
Error Code: 504 Proxy Timeout. The connection timed out. For more information about this event, see ISA Server Help. (10060)
IP Address: 91.193.105.34
Date: 11/3/2011 12:49:15 PM
Server: hammett.THG.CO.UK
Source: proxy
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This connection is being done from within the company building which currently has an ISA 2004 server acting as a Proxy Server/Gateway.

Two Questions:
Can you provide me with an example ISA 2004 Access Rule to allow access for All Internal Users to be able to connect out to https://fe-c.comte.......... please.

The website/coonection host have sent me the following email:
=======================
Hi All,

Any device that’s uses the proxy (8080 for web traffic) will require the bypass.

The reason it doesn’t work is due to all web traffic set to use 8080-http, our flights cluster/servers are setup to listen on port 8080-https also.

So when you hit http://www.google.co.uk, your machine talks out on port 8080 to the isa where it is then nat’d to port 80 (to work).

The issue is when your connect to ours on port 8080, the machine send this to the isa as http, which in turn is passed out of the network as port 80 and not port 8080.

I hope this helps.
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ALso, do I need to configure our internal DNS server with any kind of Host record to resolve this external https:// URL? If so can you provide me with an example of the type of DNS Record needed because I'm not sure which DNS internal Zone I should place the record, nor do I know what kind of record, Host/CName/etc to use.

Please find screen shots on the attached document.
In advance thank you for your support.
ISA-2004-https-Access-Rule.doc
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