Microsoft has stated that Exchange MAPI over CDO will no longer be supported by Exchange 2016. We are working on migrating our 2010 environment to either 2013 or 2016, and this is our primary concern. We have numerous legacy applications that have simply been left to run, and many we have no idea how they connect to Exchange.
Is there a way that I can identify them in logs, or an application, or anything on the Exchange side? I can't just go to all the applications to identify them (we have over 17k documented applications in our environment)...