PART 1: BASE SYSTEM

Goal: install a Qmail system that supports sending and receiving email.

Architecture:

• Daemontools will handle starting, stopping, and serving programmes.
• TCPServer will listen on port 25 and invoke qmail-smtpd each time a connection is established.
• Qmail-Smtpd will talk to the user and eventually send mail
• Daemontools will invoke qmail-send to dispatch the email after qmail-smtpd is done