If you are running Exchange 2010 SP1 and BlackBerry you should read this.

http://blogs.technet.com/b/exchange/archive/2011/03/14/exchange-2010-sp1-rollup-3-and-blackberrys-sending-duplicate-messages.aspx

Matt Stehouwer
Technology Manager
College of Natural Science Deans Office
Michigan State University
154 Natural Science Blg.
East Lansing, MI 48824
517 355-9003 | Email: [log in to unmask]