Publishing multiple OWA sites thru ISA 2004

Ok- I have OWA working fine for a long time using FBA.  It is published via ISA 2004 and works internally as well as externally.  This was set up using the recommended method (web publishing rule with a listener configured to use FBA).  The listener is configured to use a wildcard cert that is installed on the ISA as well as the Exchange 2003 server.  No problem.

I recently installed a new Exchange 2003 server and now have two.  I installed the same wildcard cert on it and FBA is enabled.  I can access OWA using FBA on the new box just fine internally.  I copied the old OWA publishing rule and changed the public name and the internal server appropriately.  (the public name resolves to same IP address of OWA-FBA listener).  It is setup identical to the original.  From an external browser- When I type https://oldserver.domain.com/exchange and supply a new user I am redirected to https://newserver.domian.com/exchange just like expected.

What I get is at this point is:
Error Code 10061: Connection refused
Background: When the gateway or proxy server contacted the upstream (Web) server, the connection was refused. This usually results from trying to connect to a service that is inactive on the upstream server.

It is very likely that I missed something obvious but I am stumped...
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jcneil4Asked:
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Keith AlabasterConnect With a Mentor Enterprise ArchitectCommented:
open the ISA GUI
click on monitoring - logging
Click on start query.
Try to connect to the each forms based authenticating Exchange server in turn. What do you see in the log?
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Keith AlabasterEnterprise ArchitectCommented:
Any further info you need?
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jcneil4Author Commented:
Sorry for the delay- I was sidetracked.  I followed your lead and that led me to the answer!  While reviewing the monitoring data I noticed that ISA was trying to connect to the firewall external address instead of the internal Exchange server address.  I added the local address of the exchange server in the ISA hosts file and bingo.

Thanks
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Keith AlabasterEnterprise ArchitectCommented:
Your welcome, and thanks :)
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