Simple Mail Transfer Protocol: Difference between revisions
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[[category:protocol]] | |||
==About== | ==About== | ||
[[Simple Mail Transfer Protocol]] (SMTP) is the protocol almost universally used for handling outgoing email.{{seed}} | |||
==Pages== | ==Pages== | ||
* [[/blocking]] | * [[/blocking]] | ||
* [[SMTP]] server software includes: | |||
** [[Postfix]] | |||
** [[Exim]] | |||
* Related: | |||
** [[email server]] | |||
==Notes== | |||
Example session (Wikipedia also has one): | |||
<pre> | |||
root@cloud1:~# telnet localhost 25 | |||
Trying 127.0.0.1... | |||
Connected to localhost. | |||
Escape character is '^]'. | |||
220 cloud1.vbz.ovh ESMTP Postfix (Ubuntu) | |||
HELO florence | |||
250 cloud1.vbz.ovh | |||
rcpt to:<test@hypertwins.org> | |||
503 5.5.1 Error: need MAIL command | |||
MAIL FROM:<test@oslt.ovh> | |||
250 2.1.0 Ok | |||
RCPT TO:<test@hypertwins.org> | |||
250 2.1.5 Ok | |||
DATA | |||
354 End data with <CR><LF>.<CR><LF> | |||
This is a test message. | |||
. | |||
250 2.0.0 Ok: queued as 48DD8BED39 | |||
quit | |||
221 2.0.0 Bye | |||
Connection closed by foreign host. | |||
root@cloud1:~# | |||
</pre> | |||
==Links== | ==Links== | ||
===Reference=== | ===Reference=== | ||
* {{wikipedia}} | * {{wikipedia}} | ||
===Testing Tools=== | |||
* [http://mxtoolbox.com/SuperTool.aspx MX Toolbox] | |||
Latest revision as of 23:12, 7 May 2022
About
Simple Mail Transfer Protocol (SMTP) is the protocol almost universally used for handling outgoing email.<hide>
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</hide>
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Pages
Notes
Example session (Wikipedia also has one):
root@cloud1:~# telnet localhost 25 Trying 127.0.0.1... Connected to localhost. Escape character is '^]'. 220 cloud1.vbz.ovh ESMTP Postfix (Ubuntu) HELO florence 250 cloud1.vbz.ovh rcpt to:<test@hypertwins.org> 503 5.5.1 Error: need MAIL command MAIL FROM:<test@oslt.ovh> 250 2.1.0 Ok RCPT TO:<test@hypertwins.org> 250 2.1.5 Ok DATA 354 End data with <CR><LF>.<CR><LF> This is a test message. . 250 2.0.0 Ok: queued as 48DD8BED39 quit 221 2.0.0 Bye Connection closed by foreign host. root@cloud1:~#
