We are in the process of migrating from Exchange 2003 to 2007. We are a small organization so we have 1 2003 server and 1 2007 server with HS, CAS, & MB roles installed. Although frowned upon, we are maintaining 2 seperate links for OWA/ActiveSync access. Everyone that is on the 03 server works fine, both owa & activesync. We got the owa to work besides not having a trusted certificate, but ActiveSync will not work at all. We are currently trying to do it under http traffic since we don't have a certificate currently, but it still doesn't sync. Is that required? Under the External URL for activesync I have owa.domain.com and that's what I have in the phone as well. I don't have redirect on for OWA. I'm not real familiar with II7 so any help on settings would be appreciated.