My situation is similar to the OP...work won't allow a personal Blackberry on their BES so I was getting my e-mail via BIS.
I had no issues getting the e-mail set up on the Blackberry, however I can not seem to get the exchange e-mail set up on the droid. I know what I was using for my user name and exchange server on the Blackberry. I'm stuck on domain. AND...when I called tech support they informed me that Android does not support OWA so if the exchange server I was using on the Blackberry was actually an OWA exchange server, then that sounds to me like I can't get anything work related on the droid.
Does anyone have any suggestions here? I'm stuck.