I just got mine to work, sort-of. The email part is working, but the calendar and contacts do not sync. I've read that there are some issues with those. No biggie, and the emails are the most important for me and I can sync the calendar with my workstation a couple times a week if needed.
I put my server name in owa.server.com (server is your server name)
Port is 443
Secure connection
Then I use my username and password for my domain, and put my domain name into the domain slot.

I tried with the calendar, and it did sync, but it always errored out when it reached the end of the sync task. I had to disable the calendar/task and contacts to get through the initial sync.