[Unit] Description=Sendmail Mail Transport Client After=syslog.target network.target sendmail.service Conflicts=postfix.service exim.service BindTo=sendmail.service StartLimitIntervalSec=0 [Service] Type=forking PIDFile=/run/sm-client.pid Environment=SENDMAIL_OPTS=-q1h EnvironmentFile=-/etc/sysconfig/sendmail ExecStartPre=/bin/touch /run/sm-client.pid ExecStartPre=/bin/chown smmsp:smmsp /run/sm-client.pid ExecStartPre=-/sbin/restorecon /run/sm-client.pid ExecStartPre=-/etc/mail/make ExecStart=/usr/sbin/sendmail -L sm-msp-queue -Ac $SENDMAIL_OPTS $SENDMAIL_OPTARG [Install] WantedBy=multi-user.target