Microsoft KB Archive/260772

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XWEB: SSL Connection Stops When Outlook Web Access Attempts to Connect to Front-End Exchange 2000 Server Through a Proxy Server

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Q260772

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The information in this article applies to:


 * Microsoft Exchange 2000 Server

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SYMPTOMS
When you use Microsoft Outlook Web Access (OWA) with Secure Sockets Layer (SSL) enabled to connect to a front-end Exchange 2000 Server computer that is running behind a proxy server, the SSL connection may not be successful. This problem may also occur when you are using only a back-end Exchange 2000 Server computer.

CAUSE
This problem can occur because SSL or HTTPS requests arrive at the back-end Exchange 2000 Server computer on port 80 instead of arriving at the front-end Exchange 2000 Server computer. Redirects are returned as &quot;http://&quot; instead of &quot;https://&quot;.

RESOLUTION
To resolve this problem, configure the proxy server to add the following header on upstream requests when OWA SSL requests are on port 443:

"FrontendHTTPS:ON"

STATUS
Microsoft has confirmed this to be a problem in Microsoft Exchange 2000 Server.

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Keywords :

Issue type : kbbug

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