OWA stops working from external network connection
When Outlook Web Access users have trouble accessing OWA from an external network connection, follow this troubleshooting advice from our expert.
I am running two servers, an Internet Security and Acceleration (ISA) 2000 server with Internet Information Services (IIS) and an Exchange 2000 server. Recently, my Outlook Web Access (OWA) stopped working. I have checked all the settings on my Exchange server and reset OWA through the ISA Management Console with no luck. I can access OWA internally, but not externally. If I connect to the ISA server through the VPN, OWA works, but it does not work from an outside network connection. Do I need a Microsoft update on one of my servers?
There are many settings within ISA Server that could be causing this problem. You mentioned that you reset OWA; I'll assume that this means that you ran the wizard to publish Outlook Web Access. This wizard is the quickest and easiest way to restore the settings that you need.
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Learning Center: Troubleshooting OWA
FAQ: Outlook Web Access
Reference Center: Outlook Web Access tips and resources
However, if the ISA Server is not the problem, have you verified that your Domain Name System (DNS) host record...
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Step 2 of 2:
still points to the correct IP address of your network?
For example, if you use https://mail.yourdomain.com/exchange as your OWA URL, make certain that mail.yourdomain.com resolves to the public IP address of your network (typically the firewall).
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