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OWA and Proxy

By joshg ·
We are currently experiencing a logon problem with Outlook Web Access. The box has NT4.0SP6a and IIS 4.0 and Proxy 2.0 loaded to it. The Exchange computer sits behind on another network. All users access the proxy box for Internet connectivity. When a user from the outside enters our Intranet (default website on the proxy box), then try to logon to Outlook Web Access they get error 403 not authorized. I have looked at the technet doc regarding this error and OWA is setup with defaults. When I test conectivity from the attached network, using the IP address only Admins can gain access to OWA but all users can access the default website. When a user enters the WINS name of the server they can access both the website and OWA. That doesn't help since the WINS name is only available internally and bypasses the proxy config. I have gone through all of the user permissions for Exchange and IIS, am I missing something? Does it sound like a Proxy problem? If so what is it? Thanks for the help.

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OWA and Proxy

by IT1 In reply to OWA and Proxy

I'm about ready to implement OWA on our Exchange server, so I'm sure I'll be asking questions here in the next couple of weeks. In my research, I believe that in order for users to access Exchange from OWA, they need to have log on locally rights to the IIS server.

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OWA and Proxy

by joshg In reply to OWA and Proxy

All users are already set to log on locally as well as groups from other domains.

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OWA and Proxy

by zk In reply to OWA and Proxy

If your proxy is not a PDC or BDC then, you need to set the authentication of the exchange virtual folder to anonymous and basic. And make sure challenge / response is unchecked. To do this go to internet service manager, right click the exchange virtual folder, then properties. Then directory securities, authentication. The top two should be checked and last one unchecked. Also click on edit button next to basic auth. Put your domain name in. So users won't have to put in domain\username when prompted.

Another thing I would check is whether you've renamed the default web site or not? Yeah, it's picky. Is the default web site running? Are there any other virtual web sites running at the external ip of the proxy? Check in the event viewer on the proxy to see if you have any "exchfilt.dll" loading error messages?

Have you also check the publishing tab of the web proxy? What is it set at?

Did you also check the Microsoft OWA troubleshooting whitepaper?

Actually more info would be helpful.

HTH&GL

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OWA and Proxy

by joshg In reply to OWA and Proxy

Poster rated this answer

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OWA and Proxy

by joshg In reply to OWA and Proxy

More info: The server is a BDC. The Directory security for the default website is set to Annon and basic. The exchange web under that is set to the same settings. I have checked the domain box under basic to include the main or default domain. I have reset the Annonymous account password, in UserManager and in Exchange. I have gone pretty much step by step through the OWA TShooting White Paper, I think that I am missing a Proxy setting somewhere.

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OWA and Proxy

by joshg In reply to OWA and Proxy

The only error message that shows in event viewer is Perflib error with event ID 1008 referencing "ISAPIsearch in dll qperf.dll". This is Perfmon related and I don't think is causing.

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OWA and Proxy

by joshg In reply to OWA and Proxy

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