We have an existing Exchange 2003 environment, with an Front-End server and two back-end servers. We have introduced an Exchange 2007 server with the CA role, and another Exchange 2007 server with the Mailbox and Hub Transport roles.
We want all clients to access the CA for web access. The /owa works OK for the 2007 mailboxes, but the 2007 mailbox users cannot login using the /exchange url. I always get a "HTTP Error 403.4 - Forbidden: SSL is required to view this resource"
I am using SSL.
Also, the /exchange virtual directory is set for forms-based authentication, and the logon format is "user name only" as I have specified the domain name (we only have one domain), but I need to log in twice for the 2003 mailbox users. If I specify DOMAIN\username, everything works OK.
The connectors and mailflow is otherwise working OK, just this web access problem.