Problem: OWA 2007 works fine internally(https://CAS/exchange
both work - exchange will redirect to owa), but fails with error Server Error, 501 Header values specify a method that is not implemented when trying to access it externally through our ISA 2006 server
We use an external SSL certificate.
Full Error Message: 501 - Header values specify a method that is not implemented.
The page you are looking for cannot be displayed because a header value in the request does not match certain configuration settings on the Web server. For example, a request header might specify a POST to a static file that cannot be posted to, or specify a Transfer-Encoding value that cannot make use of compression.
We are coming from an exchange 2003 environment, starting to setup our first exchange 2007 servers.
Exchange 2007 servers, all running Server 2008 SP1, rollup 7:
The ISA server is running on server 2003, it is ISA 2006
If I try to access a mailbox that is on a 2003 server, it goes through fine, but if the mailbox is on the 2007 server, I get the error message.
did not seem to have any effect on the problem.
In my OWA rule on the ISA server for paths, Im using / /exchange\
in addition to the 4 default ones (external path says <same as internal>, paths are /public/*, /OWA/*, /Exchangeweb/*, /Exchange/*)
Forms based Authentication is turned off on the CAS server, its set to basic or integrated windows authentication.
Thoughts on what to check?