ISA 2004 - Error 502 connection - refused(10061) when trying to access a website via https

I'm trying to access a website (management console of another firewalls sonicwall) over the internet
e.g. https://x.x.x.x but it gives me an error. Port on website is the standard: 443.

Error:
Network Access Message: The page cannot be displayed
Technical Information (for Support personnel)
Error Code: 502 Proxy Error. Connection refused(10061)
IP address: x.x.x.x
Server: isa2004
Source: proxy

Normally I get a security window, click on ok and I see the website where I can fill in usern./password
I'm able to access these websites via another firewall, it means that the isa2004 is blocking this.
Strange: homebanking via https is working.


Setup:
-ISA Server2004 Edge firewall SP2
- Rules = allow https int. ext. all users
-Client =  webproxy

michael_fascianAsked:
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Computer101Connect With a Mentor Commented:
PAQed with points refunded (250)

Computer101
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Keith AlabasterEnterprise ArchitectCommented:
Open your ISA gui. Select monitoring - logging - click on start query and try the connection. What do you see in the log?

If you try the connection from a PC on the outside of ISA, does this connect OK?
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michael_fascianAuthor Commented:
FYI problem is solved it was the remote firewall, it only allowed remote management from a specific network range.  Thx.
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Keith AlabasterEnterprise ArchitectCommented:
Yeah, seemed that would be the case (Error Code: 502 Proxy Error. Connection refused(10061)
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