1 Nov
                
                    2019
                
            
            
                1 Nov
                
                '19
                
            
            
            
        
    
                1:19 a.m.
            
        during the update the log_warnings changed from 1 to 2 therefore showing lots of aborted connection notices in the logs
changing the log_warnings back from 2 to 1 solved this issue
Yes the same setting made the same change to the default with mysql:
https://dev.mysql.com/doc/refman/5.7/en/server-options.html#option_mysqld_lo...
So now we know how to silence the "Aborted connection" mysql loglines thank you!
But still I wonder if Dovecot wants to handle these connections slightly differently - if it could be cleaner? Or is it moot?