Eugene Podshivalov: > Thanks for the explanation, Wietse. > > Probably the issue is just with the logging levels. > My current configuration already has > > > smtpd_client_restrictions=reject_unknown_client_hostname > > and the log file is flooded with message like this > > > connect from unknown[ x.x.x.x] > > NOQUEUE: reject: CONNECT from unknown[ x.x.x.x]: 450 4.7.25 Client host > > rejected: cannot find your hostname > > which makes it hard to analyse. > > For comparison, the postscreen_*_action params let you `enforce` reject a > delivery attempt and log it, or just 'drop' the connection silently.
Here is an idea open a shell window type: man 1 grep type: man 1 less
