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

[Service]
Type=forking

EnvironmentFile=-/etc/sysconfig/postgrey
ExecStartPre=-/bin/rm -f /var/run/postgrey.pid

PIDFile=/var/run/postgrey.pid

ExecStart=/usr/sbin/postgrey \
 --unix=/var/spool/postfix/postgrey/socket \
 --pidfile=/var/run/postgrey.pid \
 --daemonize \
 $POSTGREY_OPTS

Restart=always
RestartSec=1

[Install]
WantedBy=multi-user.target