Originally Posted by penguin3107
Hard to say. RIM has not yet certified BIS to work with OWA 2007 yet.
People here say it works fine, but it's not officially supported yet.
Chances are, you'll be OK.
Your comment of "similar to a company using blackberry exchange server" is very confusing. BES isn't even a factor here, so it's odd that you mention it. BES works fine with Exchange 2007 and no functionality is lost at all by moving from Exchange 2003 to Exchange 2007 in a BES environment.
one of the current issues we have with exchange 2003 and no bes is that contacts lists (address book) and appointments (creation of new appts and inviting others) has been lost with the new service pack.
sorry my experience with BBs and BES and/or BIS is lacking... but i am learning from this website, posting, and the latest rim outages. thank you all for educating me.