We currently installed exchange 2010 in our environment. I have moved over a few test users mailboxes over to the new 2010 server. When I try to use active sync, it works for a few users and does not work for few. I am using the exact same drevice (ipad), but it works for some users, and does not work for others. I keep getting the following error "cannot get mail connection to server failed". When the same user tries to use OWA, it works. Any help will greatly be appreciated.