TCP/IP Email Communication Overview
You've just seen that TCP/IP email is implemented as a complete system, with a number of elements that perform different portions of the complete job of email communication. These included a standard message format, a specific syntax for recipient addressing, and protocols to both deliver mail and allow access to mailboxes from intermittently connected TCP/IP clients.
To help set the groundwork for examining these components, here, I provide an overview of the complete end-to-end process of email communication, so you can see how everything works. I will show the basic steps in simplified form and continue the analogy to the regular mail system for comparison.
The modern TCP/IP email communication process consists ...
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