SMTP protocol definition of SMTP protocol in the Free Online Encyclopedia.

Simple Mail Transfer Protocol [¦sim·pəl ′māl ‚tranz·fər ‚prōd·ə‚kȯl]

(computer science)

An Internet standard for sending e-mail messages. Abbreviated SMTP.

(messaging)

Simple Mail Transfer Protocol - (SMTP) A protocol defined in STD 10, RFC 821, used to transfer electronic mail between computers, usually over Ethernet. It is a server to server protocol, so other protocols are used to access the messages. The SMTP dialog usually happens in the background under the control of the message transfer agent, e.g. sendmail but it is possible to interact with an SMTP server using telnet to connect to the normal SMTP port, 25. E.g.

telnet mhs-relay.ac.uk 25

You should normally start by identifying the local host:

HELO wombat.doc.ic.ac.uk

You can then issue commands to verify an address or expand an alias:

VRFY fred@doc.ic.ac.uk VRFY postmaster

or expand a mailing list:

EXPN c-help

You can even send a message:

MAIL From:<fred@doc.ic.ac.uk> RCPT To:<fred@mailway.doc.ic.ac.uk> DATA What is the point? . QUIT

This is useful if you want to find out exactly what is happening to your message at a certain point.

See also Post Office Protocol, RFC 822, sendmail.

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No references found	The emails always have two "From" addresses, with the real "From" address sent in the SMTP protocol communication level, not seen by the user. Spoofed Delta Airlines emails contain trojan by Angela Moscaritolo / SC Magazine Anyone who has ever sent an email has used the SMTP protocol behind the scenes. Understanding and Correcting SMTP Relaying Problems by Susan Jackson / Computers and Internet community The product utilises the SMTP protocol and works in conjunction with the Windows 2000 SMTP service or an existing SMTP/POP3 server or Lotus Notes to deliver scalability, e-mail integration and ease of use. GFI introduces new fax server by Worldwide Computer Products News	Smorgon Smorodin, Petr Smorodin, Petr Ivanovich Smorodintsev, Anatolii Smorodintsev, Anatolii Aleksandrovich smother kiln smothered bottom Smothers, Dick Smothers, Tom Smotrich Smotritskii, Meletii SMOW SMP SMPT SMPTE SMR Smrek, Jan Smrek, Ján SMRP Smrti SMS SMS Installer SMSing SMT SMTP SMTP protocol SMTPi smudge smudge oil smudging Smugglers Notch State Park Smuggling Smuglevicius, Pranciškus Smuglevicius, Pranciskus smurf smurf attack Smurov, Aleksandr Smurov, Aleksandr Antonovich Smushkevich, Iakov Smushkevich, Iakov Vladimirovich Smut smut fungus Smuts Smuts, Jan Smuts, Jan Christiaan Smuts, Jan Christian Smuul, Iukhan Smybert, John Smyrna Smyshliaev, Dmitrii Smyshliaev, Dmitrii Dmitrievich	SMTC SMTCCAC SMTCL SMTD SMTDC SMTDF SMTDSLT SMTE SMTEC SMTF SMTG SMTH SMTI SMTIW SMTK SMTL SMTM SMTMD SMTN SMTO SMTOE SMTOM SMTP SMTP SMTP SMTP greeting SMTP greeting SMTP protocol SMTP relay SMTP server SMTP server SMTPC SMTPD SMTPE SMTPi SMTPi SMTPS SMTQ SMTRB SMTS SMTSA SMTT SMTTP SMTU SMTUMP SMTV SMTW SMTWF SMTWRFS SMTWTFS SMTWTGH SMTZ SMU SMUA

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No references found

The emails always have two "From" addresses, with the real "From" address sent in the SMTP protocol communication level, not seen by the user.

Spoofed Delta Airlines emails contain trojan by Angela Moscaritolo / SC Magazine

Anyone who has ever sent an email has used the SMTP protocol behind the scenes.

Understanding and Correcting SMTP Relaying Problems by Susan Jackson / Computers and Internet community

The product utilises the SMTP protocol and works in conjunction with the Windows 2000 SMTP service or an existing SMTP/POP3 server or Lotus Notes to deliver scalability, e-mail integration and ease of use.

GFI introduces new fax server by Worldwide Computer Products News

Simple Mail Transfer Protocol (redirected from SMTP protocol)

Simple Mail Transfer Protocol
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