[Unit] Description=Courier ESMTP Daemon Requires=authdaemond.service After=authdaemond.service courier-courierfilter.service [Service] Type=forking ExecStart=/usr/sbin/esmtpd start ExecStop=/usr/sbin/esmtpd stop ExecReload=/usr/sbin/esmtpd restart PIDFile=/run/courier/esmtpd.pid [Install] WantedBy=multi-user.target