CHAPTER 21 SMTP and Email
What You Will Learn
In this chapter, you will learn about the major architectures used to send and receive email on the Internet. We’ll also see the five steps needed to send an email message.
You will learn about the protocols used with email applications, especially SMTP and POP3. We’ll also describe MIME messages and discuss the important role of headers in email.
The Internet and TCP/IP are known to the greatest number of people through electronic mail (email) applications. Even those who cannot tell a router from a modem, or a packet from a frame, can check their email and send a message. A certain percentage of users still use the Internet mainly for email.
Email was one of the original applications the Internet ...