[Learned] What Is SMTP (Simple Mail Transfer Protocol)?

What Is SMTP?

What Is the Meaning of SMTP?

It is a common protocol used by mail servers and other message transfer agents for sending and retrieving/receiving e-mails.

Typically, user-level mail clients make use of SMTP only for sending messages to a mail server for relaying.

Yet, proprietary servers still usually apply proprietary protocols like Exchange ActiveSync.

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Read this article and find the guides.

What Is SMTP Protocol?

Therefore, the session is opened and the session parameters are exchanged.

A session may contain 0 or more SMTP transactions, which consists of below 3 command or reply sequences.

What Is an SMTP Server?

And, fully capable SMTP servers maintain queues of messages for retrying message transmission that leads to transient failures.

An MUA knows the outgoing email SMTP server from its configuration.

Relay servers can also be configured to make use of a smart host.

Compared with MTA, MSA connection needs SMTP authentication.

Therefore, mail spoofing is possible and has become popular in email spam and phishing.

If you are interested in such kind of data pipe technology, just take a look at ourknowledge base!