This is the default example configuration of postfix provided by Postfix. This config file was generated by Postfix running on Ubuntu 18.04.
It is located under: /etc/network/if-up.d/postfix
#!/bin/sh -e # Called when a new interface comes up # Written by LaMont Jones <email@example.com> # don't bother to restart postfix when lo is configured. if [ "$IFACE" = "lo" ]; then exit 0 fi # If /usr isn't mounted yet, silently bail. if [ ! -d /usr/lib/postfix ]; then exit 0 fi RUNNING="" # If master is running, force a queue run to unload any mail that is # hanging around. Yes, sendmail is a symlink... if [ -f /var/spool/postfix/pid/master.pid ]; then pid=$(sed 's/ //g' /var/spool/postfix/pid/master.pid) exe=$(ls -l /proc/$pid/exe 2>/dev/null | sed 's/.* //;s/.*\///') if [ "X$exe" = "Xmaster" ]; then RUNNING="y" fi fi # start or reload Postfix as needed if [ ! -x /sbin/resolvconf ]; then f=/etc/resolv.conf if ! cp $f $(postconf -hx queue_directory)$f 2>/dev/null; then exit 0 fi if [ -n "$RUNNING" ]; then service postfix reload >/dev/null 2>&1 fi fi # If master is running, force a queue run to unload any mail that is # hanging around. Yes, sendmail is a symlink... if [ -n "$RUNNING" ]; then if [ -x /usr/sbin/sendmail ]; then /usr/sbin/sendmail -q >/dev/null 2>&1 fi fi
Download the raw file with wget or curl
wget -O postfix.example http://exampleconfig.com/static/raw/postfix/ubuntu18.04/etc/network/if-up.d/postfix
curl http://exampleconfig.com/static/raw/postfix/ubuntu18.04/etc/network/if-up.d/postfix > postfix.example
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