We have OWA and RPC over HTTPS setup on our Exchange 2003 server, and both are working perfectly.
Some of our users are working at client sites and must connect to the internet through the client's web proxy. OWA uses the proxy authentication credentials that are saved in IE and connects without any problem. Outlook Anywhere does not use the saved credentials and will not connect.
We examined the HTTP traffic using Fiddler and found that the proxy authentication header is blank for Outlook Anywhere requests, but we can use Fiddler to inject the credentials and Outlook Anywhere connects.
Is there a way to configure this in Outlook 2007 so that we do not have to use this tool?? I have been through every setting I can find, and don't see a way to do it.