Originally Posted by jibi
Also, make sure that you don't have Outlook installed in place of Exchange System Manager on Server 2. You may want to look through the Installation Guide - honestly, its very easy to install the BES server and get it working.
mapi version 1.0 would point to Outlook as you said jibi. That version comes with Outlook as opposed to ESM. Correct that by uninstalling Outlook and then installing ESM with appropriate patches.
Your description of "Calendar Bi-Directional Synchronization issues" tells me that you should spend less time on CDO and more on verifying that your Exchange Permissions match those specified in the Guide exactly. Too many permissions/group membership isn't always a good thing. For example, the BESAdmin being a Domain Admin is not good.