Postfix logging without syslog now supports logging to stdout. This requires starting Postfix with "postfix start-fg" and main.cf with "maillog_file = /dev/stdout". It does not get easier than this.
Available from ftp://ftp.porcupine.org/mirrors/postfix-release/experimental postfix-3.4-20190126-nonprod-logger.HISTORY postfix-3.4-20190126-nonprod-logger.RELEASE_NOTES postfix-3.4-20190126-nonprod-logger.tar.gz postfix-3.4-20190126-nonprod-logger.tar.gz.gpg1 postfix-3.4-20190126-nonprod-logger.tar.gz.gpg2 postfix-3.4-20190126-nonprod-logger.tar.gz.sig See the RELEASE_NOTES file for instructions and limitations. Wietse