We have set up our Exchange 2003 server to use Outlook over HTTPS. We have went through all the required steps and then troubleshooted by verifying that we are able to browse use webmail by using HTTPS with the certificate that we purchased.
I looked at various support articles which suggested to browse to https://servername/rpc
which we can do successfully and we are prompted to enter the password 3 times and then get a message saying "HTTP Error 401.3 - Unauthorized: Access is denied due to an ACL set on the requested resource" which is what you are meant to get if it is configured correctly.
However the next step suggests to browse to https://servername/rpc/rpcproxy.dll
and when we do this there is no promt at all and internet explorer displays the following
"Error Code 64: Host not available
Background: The connection to the Web server was lost"
And on the ISA 2004 Server we see this:
Failed Connection Attempt SERVER 7/10/2009 1:58:28 PM
Log type: Web Proxy (Reverse)
Status: 64 The specified network name is no longer available.
Source: External ( 188.8.131.52:0)
Destination: ( 192.168.1.100:443)
Request: GET https://servername:443/rpc/rpcproxy.dll
Filter information: Req ID: 15ecbf98
Can anyone please advise how we can resolve this ?
Many thanks in advance