If you are receiving odd email from RIM that are similar to this example below:
Subject: RIM_bca28a80-e9c0-11d1-87fe-00600811c6a2 This message is used to carry data between the BlackBerry handheld and an associated server. Please do not delete, move or respond to this message - it will be processed by the server. BEGINETP 192 AaHetaMAAAAAIBAIMjQwNEVGMzkgHXRyYWNleUB1bmxlYXNoZW R1bmxpbWl0ZWQuY29tADPy etc., etc.,...
Step 1: You have installed Desktop Manager using the ‘Desktop Redirector’ option.
If you’re not using Redirector, you should uninstall Desktop Manager and then reinstall it using the BlackBerry Internet Service option.
Step 2: On your device, go to: Options > Advanced > Service Book, and delete all service books for [Desktop]
Thanks to penguin3107 and JSanders @ BlackBerryForums.com for contributing to this FAQ.