> Am 03.04.2017 um 15:43 schrieb Wietse Venema <wie...@porcupine.org>: > > Wietse Venema: >>> After I ran this (in fact I was too slow ;-) ), I sent a mail from >>> external MTA mail.sys4.de and this mail did not run through any >>> of the milters. It is much more worse than I thought, because each >>> mail after that "mail loop" above was not scanned by any milters >>> anymore! I also stopped postfix and started it again and still no >>> milters got connected when sending test mails from external MTA. >> >> If this problem persists after stopping and starting Postfix, then >> you have proved that either it is not a Postfix problem or that your >> measurement procedure is in error. >> >> There is no POSTFIX Milter-related state that persists across >> restarts, but there may be such state elsewhere: rate-limiting >> policy servers, state in the kernel's networking stack, clients >> deciding to deliver mail elsewhere, ... > > Especially relevant for logging is system-effing-d log rate limiting, > which reportedly has lower thresholds than rsyslog log rate limiting, > meaning that systemd throws away events before rsyslogd can log them. > This mechanism persists across Postfix restarts.
I am not using systemd. (Gentoo Open-RC) Also both milters add headers, which are missing in the received test mails. Which indicates that the milters did not run. Also this is a very low traffic server. After doing the 100 mail loop, I sent three or four test mail with 30 second delays. No other mails passed the system. So no logger would suppress this. I alo found out that sending from submission does not solve the problem. I repeated my test. It seems there exists some kind of timeout somewhere that is postfix stop/start aware. After that time period milters start working again. I only can guess: 2-5 minutes later milter begin working again. I only have the Dovecot-Quota policy service (non else) and I have no other services that would cache things. Only two milters (vrfydmn and a anti-spam milter as shown in my first mail). Christian -- Erlenwiese 14, 36304 Alsfeld T: +49 6631 78823400, F: +49 6631 78823409, M: +49 171 9905345
smime.p7s
Description: S/MIME cryptographic signature
