[Unit]
Description=Exim MTA Daemon
Documentation=man:exim
Documentation=https://exim.org/docs.html

Requires=network.target
After=network.target

[Service]
Environment=DAEMON_OPTS=
Environment=QUEUE_OPTS=-q15m
EnvironmentFile=-/etc/default/exim

Type=exec
ExecStart=/usr/bin/exim -bdf $DAEMON_OPTS $QUEUE_OPTS
ExecReload=/bin/kill -HUP $MAINPID

Slide=exim.slice

[Install]
WantedBy=multi-user.target