[Unit]
Description=Postfix Greylisting Service
Before=postfix.service

[Service]
Type=forking
EnvironmentFile=-/etc/sysconfig/postgrey
ExecStartPre=-/bin/rm -f /run/postgrey.pid
PIDFile=/run/postgrey.pid

ExecStart=/usr/sbin/postgrey \
 --pidfile=/run/postgrey.pid \
 --daemonize \
 $SOCKET $OPTIONS

Restart=always
RestartSec=1

[Install]
WantedBy=multi-user.target