Email—What Is It?
Setting up electronic mail (email) services on a Linux system is really quite simple. Depending on your objectives, email can be operational upon completing the Linux installation. However, that is not to say that email configuration and operation are simple by any means. The internals of email configuration and the process by which it works are quite complex.
Email, in simple terms, is merely an automated way of delivering conventional mail. In fact, thinking of it in terms of the conventional mail that is delivered by the postal service can actually help you understand what email is and how it works. Conventional mail delivery can be thought of in three distinct parts: sending mail, receiving mail, and transporting mail between ...
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