check process dovecot with pidfile /var/run/dovecot/master.pid
  group mail
  start program = "/bin/systemctl start dovecot"
  stop program = "/bin/systemctl stop dovecot"
  if failed port 993 type tcpssl sslauto protocol imap for 5 cycles then restart
  if failed port 995 type tcpssl sslauto protocol pop for 5 cycles then restart
  if 3 restarts within 5 cycles then timeout