Postfix Stdout Logger

This tool creates a unixsocket (e.g. /dev/log) and then runs postfix start-fg all logs are logged to stdout.

Use this in a Dockerfile like this:

FROM ubuntu:20.10

MAINTAINER Matthias Schneider

RUN apt-get update && \
  echo "postfix postfix/mailname string example.com" | debconf-set-selections && \
  echo "postfix postfix/main_mailer_type string 'Internet Site'" | debconf-set-selections && \
  apt-get install curl postfix mailutils -y

RUN update-rc.d -f postfix remove

RUN postconf -e syslog_name=example-smtp
RUN postconf -e mynetworks=0.0.0.0/0

RUN cp /etc/host.conf /etc/hosts /etc/nsswitch.conf /etc/resolv.conf /etc/services /var/spool/postfix/etc

RUN curl -sfL https://raw.githubusercontent.com/mschneider82/postfixstdoutlogger/master/godownloader.sh | sh

CMD ["./usr/bin/postfixstdoutlogger", "--overwrite", "--socketfile", "/dev/log"]

This will be obsolete once postfix 3.4.x is available in repos. There is an option to set maillog_file=/dev/stdout