[rvoige]

We have BES express 5.0.2.29 on 2008 r2 server. We are migrating our old 2003 server with exchange to a new 2008 server with exchange 2010. Are there any white pages or KBs on the migration.

[MasterofKarate]

The following RIM Articles should help you out. There are a few pitfalls when migrating to Exchange 2010 but as long as you follow the RIM documentation and ensure that all of your permissions and policies for the BESAdmin account are properly applied you will be just fine:

KB22601-How to migrate from Microsoft Exchange Server 2003 or 2007 to Microsoft Exchange Server 2010 in a BlackBerry Enterprise Server 5.0 environment

h ttp://us.blackberry.com/support/software/server_express_exchange_may_11_11.pdf

You're going to want to get the latest version of MAPI/CDO from Microsoft installed as well.