Filter out particular lines from Postfix logs

Dan

Is there a way to filter the Postfix (and Dovecot) logs to exclude particular strings, from both the Redis logs and the Docker logs? I’m using a service that monitors the uptime of my servers, and their connections are filling my logs with connect/disconnect logging (“connect from xxxx”, “disconnect from xxxx”) so I’m worried I won’t notice real actual errors in the logs. I’d like to filter out any log lines that mention their particular IP addresses.

Thanks!

Dan

What I ended up doing was configuring Docker to write the logs to syslog (thanks for the docs at https://mailcow.github.io/mailcow-dockerized-docs/firststeps-logging/ for getting me started with that)

version: '2.1'
services:
  postfix-mailcow:
    logging:
      driver: "syslog"
      options:
        syslog-address: "unixgram:////dev/log"
        syslog-facility: mail

Then I just used a filter in my rsyslogd config to filter out these lines

:msg, contains, "1.2.3.4" ~

They’re still in the Redis logs but at least they’re not in my syslogs any more.