On 2021-11-17 15:25:19, Florian Effenberger wrote: > Hello Micah, > > micah wrote on 17.11.21 at 15:11: > >> I've been doing some tests of my postfix server and sometimes when I >> connect, I get *two* ESMTP banners, one that has a hyphen (-) after the >> 220, and one that doesn't. Other connections, I only get one banner: > > that is the postscreen banner: http://www.postfix.org/POSTSCREEN_README.html > > If the connecting machine's IP is cached, the banner is not shown.
Thanks! I could not find that detail anywhere. micah
