Trying to deploy Windows Mobile 5.0 devices with the Messaging and Security Feature Pack, along with Exchange Server 2003 SP2, so you can get that Direct Push and remote administration love? Running into problems? Never fear -- Jason Langridge has your back. You can't get this one off of the official Microsoft download site yet, although it will be there soon enough.
This document covers everything from upgrading your Exchange servers, configuring your front-end and back-end servers (single server configurations aren't forgotten!), enabling and requiring SSL, installing ISA Server 2004, installing the new mobile management tools, provisioning and configuring your Windows Mobile devices, and setting device policies. It even, as a special bonus, tells you how to deploy certificate-based authentication -- the Holy Grail of Windows Mobile messaging -- as well as how to create CAB files to export root certificates to your devices. Needless to say, this is a must-get.