Subject Index: SMTP - Electronic mail

Data file 6 SMTP session with delivery of one mail message from SMTP client to SMTP server. Contains approximately 3,000 bytes and 30 packets.
Figure 32.1 An example e-mail message. Lines of the header begin with a keyword and a colon; a blank line separates the header from the body .
Figure 32.2 Examples of keywords found in Internet mail.
Figure 32.3 The path of an e-mail message. The mail transfer program on the sender's computer becomes a client of the remote mail server.
Figure 32.4 An example SMTP transfer between a client on computer example.com and a server on computer foobar.com. Each line is labeled to show whether the client or server transmits the line.
Figure 32.5 An example database used by a mail exploder. Each entry is assigned a name and contains a list of e-mail addresses.
Figure 32.6 The path of a message as it passes from a sender's interface through a mail gateway. On the gateway computer, an exploder handles incoming e-mail, and a conventional mail transfer program sends a copy to each recipient.