192.168.22.2:10587 inet  n       -       n       -       10      smtpd
  -o syslog_name=submission/mass-mail
  -o smtpd_tls_security_level=none
  -o smtpd_relay_restrictions=
  -o smtpd_recipient_restrictions=permit_mynetworks,reject
  -o mynetworks=127.0.0.0/8,192.168.22.2/24