I have been using the IMAP with all of our iPhones (opensource edition). Just got a trial license for NE, installed and enabled mobil. When I goto setup the iPhone using exchange settings, it say "Exchange Account verification failed". Note: I got multiple domains on same server I think this is part of it. I tried every possibility on the domain\user etc. on the iPhone exchange account wizard and nothing works. Is there something else that needs to be setup to make this work that I am missing?