Avoiding Running as root (cont)

• now is setgid smmsp instead

  • use seperate queue /var/spool/clientmqueue for message submission, writable by group smmsp
  • uses /etc/mail/submit.cf for MSP configuration
  • very dumb configuration; only knows how to forward to real SMTP daemon on localhost port 25
    • SMTP daemon must be running for mail to be delivered!