Linux Trivia Translation-mail server

Talk about "mail server" this time.

The mail server typically runs 2 server-side software, "SMTP servers, and"POP servers or IMAP servers.

These 2 things, perhaps the people who use the mail client immediately understand. Because when setting up the mail client, you need to specify the "Sending server" and "Receiving server".

These 2 servers are the same situation, although a lot of cases, but generally designated "send a server" or "receiving server" when it refers to the "mail-sending service-side software" and "receiving mail service-side software."

When you send a message, the route for sending the message is simply indicated as follows:

That is, the mail client uses the SMTP (Simple Mail Transfer Protocol) protocol to send the message to the destination SMTP server, and then the client receiving the message receives the message from the POP server.

Keep in mind that sometimes SMTP servers are called MTA (Mail Transfer agent), and mail clients are sometimes referred to as MUA (mail User agent).