[Unit]
Description=Sendmail Mail Transport Agent
After=syslog.target network.target
Conflicts=postfix.service exim.service
Wants=sm-client.service

[Service]
Type=forking
PIDFile=/var/run/sendmail.pid
Environment=QUEUE=1h
Environment=DAEMONOPTIONS=
EnvironmentFile=-/etc/sysconfig/sendmail
ExecStartPre=-/usr/bin/newaliases
ExecStartPre=-/usr/bin/make -C /etc/mail -s
ExecStart=/bin/sh -c 'exec /usr/sbin/sendmail.sendmail $DAEMONOPTIONS -bd $(if [ -n "$QUEUE" ]; then echo -q$QUEUE; fi)'

[Install]
WantedBy=multi-user.target
Also=sm-client.service