A number of iPhone, iPhone 3G, and iPod touch users are reporting problems syncing with Exchange 2007 after upgrading to iPhone OS 3.1. Users on an Apple Discussion thread claim that after installing the update, they receive the message “Policy Requirement - The account [account name] requires encryption which is not supported on this iPod/iPhone.” The problem appears to stem from the pre-3GS models’ lack of hardware encryption;…
