[Unit]
Description=Sendmail Mail Transport Client.
After=syslog.target network.target sendmail.service

[Service]
EnvironmentFile=-/etc/sysconfig/sendmail
ExecStart=/usr/sbin/sendmail -L sm-msp-queue -Ac $QUEUE $SENDMAIL_OPTARG
RemainAfterExit=yes

[Install]
WantedBy=multi-user.target