On Jan 10, 2020, at 11:37, Gerben Wierda wrote: > Given that postfix writes a pid file in /opt/local/var/spool/postfix/pid/master.pid would it be possible to use a startupitem.pidfile entry that triggers daemondo to try to relaunch when this happens? That seems reasonable. I filed: https://trac.macports.org/ticket/59959