Jaroslaw Rafa <r...@rafa.eu.org> writes: > Dnia 27.02.2020 o godz. 07:02:10 Wietse Venema pisze: >> > firewall for me. Additionally, what I didn't mention in my original post, >> > it was eating up my resources a bit, and there was a noticeable server >> > slowdown. >> >> In what respect? File system (logging), networking, memory, ...? >> Is this systemd overhead? I tried to make Postfix "not receiving >> email" as inexpensive as possible. I further reduced that cost by >> adding postscreen. > > I did not investigate it very much. Definitely it was not a CPU issue, might > be networking.
Better investigate before blaming Postfix! We are using Postfix very happily, without firewalling these, and without slowdown, on a very busy set of machines. Postscreen has helped tremendously in this respect. -- micah