[Unit]
Description=Sendmail Mail Transmission Agent
Documentation=man:sendmail(8)
After=syslog.target network.target nss-lookup.target auditd.service sssd.service autofs.service
Conflicts=postfix.service exim.service
StartLimitInterval=60
StartLimitBurst=5
StartLimitAction=none

[Service]
Type=forking
PIDFile=/run/sendmail.pid
WorkingDirectory=/
LimitNOFILE=64535
ExecStart=/lib/systemd/scripts/sendmail start
ExecReload=/lib/systemd/scripts/sendmail refresh
ExecStop=/lib/systemd/scripts/sendmail stop
Restart=on-failure
RestartPreventExitStatus=95 96

# Usually ${ExecStop} takes care of terminating the service. However, if still
# running after 30s, let systemd handle it. sendmail SIGTERMs its children on
# SIGTERM. Therefore no need for mixed mode. 
TimeoutStopSec=30s
KillMode=process
SendSIGHUP=No
# Make sure, that finally all processes got terminated.
SendSIGKILL=yes

[Install]
WantedBy=multi-user.target