Prior to SP1 i was able to run owa on port 9443. This is now an issue on sp1.
From testing what i have found is that when you access owa on a substandard port you are redirected to the auth/logon.aspx page on port 443 despite the fact that you accessed the site on a different port. After i login to the auth page i am correctly redirected back onto port 9443. The issue is that the environment i am in does not permit me to port forward 443 to the server therefore owa no longer works in this circumstance. I tried playing with urlrewrite but i believe there is a module in exchange that is fighting the rewrite. Is it possible to have this addressed? Assuming port 443 for the login page seems like a mistake since i am able to specify the port in the external url address for all services.