We have MS CRM 2015 on premise and use outlook connector. We use this setting for most users. I checked on MS page and this setting means that it is tracking responses on CRM mail. This means that if I send an email and track it, the response to that mail will also be tracked.
However, in my organisation we receive emails which get tracked but do not have anything to do with customer communication. Many of these are internal emails. Does anyone experience same problem and how do you solve it? 
Of course I can remove the tracking option, but then we have colleagues who will not get their emails tracked correctly.
Thank you very much for your help !