Going back to the initial question/request:
I use these settings below to reduce the bots and scripts sending messages. It doesn't require legit MTAs to reconnect (ESP using large IP pools are not affected) and didn't get any complaints. (I use the settings in a mail gateway project shared to others.) postscreen_greet_action = enforce postscreen_non_smtp_command_enable = no postscreen_pipelining_enable = no postscreen_greet_wait = ${stress?1}${stress:8}s Marius. -----Original Message----- From: owner-postfix-us...@postfix.org [mailto:owner-postfix-us...@postfix.org] On Behalf Of Michael Ströder Sent: Saturday, January 24, 2015 12:56 AM To: postfix-users@postfix.org Subject: Re: is there a 'typical' smtpd resend delay ? do you use Deep Protocol Tests in your production? rogt3...@proinbox.com wrote: > Perhaps you might want to hang out with a email crowd. Over the years, > been on the exim list? Ever had the pleasure of dealing with > [..snipped..] IMO it's not fair to mention another person who cannot answer. Please, everybody should calm down, step back for now and not spam the list. Ciao, Michael.