kopano-core/installer/linux/kopano-ical.service

[Unit]
Description=Kopano Core iCal/CalDAV Gateway
Documentation=man:kopano-ical(8) man:kopano-ical.cfg(5)

[Service]
Type=simple
Environment=LC_ALL=C LANG=C
ExecStart=/usr/sbin/kopano-ical -F
ExecReload=/bin/kill -HUP $MAINPID

[Install]
WantedBy=multi-user.target