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Simple Mail Transfer Protocol - Wikipedia

The SMTP-AUTH extension also allows one mail server to indicate to another that the sender has been authenticated when relaying mail. In general this requires the recipient server to trust the sending server, meaning that this aspect of SMTP-AUTH is rarely used on the Internet. [citation needed] SMTPUTF8. Supporting servers include:

SMTP (Simple Mail Transfer Protocol) Definition

SMTP. Stands for "Simple Mail Transfer Protocol." This is the protocol used for sending e-mail over the Internet. Your e-mail client (such as Outlook, Eudora, or Mac OS X Mail) uses SMTP to send a message to the mail server, and the mail server uses SMTP to relay that message to the correct receiving mail server. Basically, SMTP is a set of commands that authenticate and direct the transfer of electronic mail.

What is SMTP (Simple Mail Transfer Protocol)? - Definition ...

SMTP (Simple Mail Transfer Protocol) is a TCP/IP protocol used in sending and receiving e-mail. However, since it is limited in its ability to queue messages at the receiving end, it is usually used with one of two other protocols, POP3 (Post Office Protocol) or IMAP (Internet Message Access Protocol), that let the user save messages in a server mailbox and download them periodically from the server.

What is Simple Mail Transfer Protocol (SMTP)?

SMTP is a communication protocol for mail servers to transmit email over the Internet.

Simple Mail Transfer Protocol (SMTP): Definition & How it ...

SMTP is an asymmetrical protocol, meaning that there are many clients interacting with one server, using a basic model popular in the 1980s which is now mostly defunct outside of email protocols. SMTP runs on TCP/IP and listens on port 25.

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What Is an SMTP Server? - SendGrid

Like most servers, the SMTP server processes data to send to another server, but it has the very specific purpose of processing data related to the sending, receiving, and relaying of email. An SMTP server is also not necessarily on a machine. It is an application that is constantly running in anticipation of sending new mail.

SMTP & ESMTP Protocol: Explanation, Port, Example & more - IONOS

SMTP stands for “Simple Mail Transfer Protocol.” It is a connection-oriented, text-based network protocol from the internet protocol family and is located on the seventh layer of the OSI model: the application layer. Just like any other network protocol, it contains rules for correct communication between computers in a network.