Difference between revisions of "Mail Talk SMTP and POP"

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(New page: == Standard SMTP Conversation == Mailserver says: 220 mailserver.domain.com SMTP ... Greetings Sender says: Helo sender.host.name Mailserver says: 250 Nice to meet you Sender ...)
 
m (→‎With SMTP Authentication)
 
(4 intermediate revisions by one user not shown)
Line 14: Line 14:
 
  Mailserver says: 250 Message accepted for delivery
 
  Mailserver says: 250 Message accepted for delivery
 
     Sender says: Quit
 
     Sender says: Quit
 +
 +
Example with strict syntax:
 +
 +
Here is an example of a transaction between a client (C) and an SMTP server (S)
 +
 +
S: 220 smtp.commentcamarche.net SMTP Ready
 +
C: EHLO machine1.commentcamarche.net
 +
S: 250 smtp.commentcamarche.net
 +
C: MAIL FROM:<webmaster@kioskea.net>
 +
 +
S: 250 OK
 +
C: RCPT TO:<meandus@meandus.net>
 +
 +
S: 250 OK
 +
C: RCPT TO:<tittom@tittom.fr>
 +
 +
S: 550 No such user here
 +
C: DATA
 +
S: 354 Start mail input; end with <CRLF>.<CRLF>
 +
 +
C: Subject: Hello
 +
C: Hello Meandus,
 +
C: How are things?
 +
C:
 +
C: See you soon!
 +
C: <CRLF>.<CRLF>
 +
 +
S: 250 OK
 +
C: QUIT
 +
R: 221 smtp.commentcamarche.net closing transmission
 +
  
 
== SMTP Commands to Issue Example ==
 
== SMTP Commands to Issue Example ==
Line 35: Line 66:
 
  dele 2
 
  dele 2
 
  quit
 
  quit
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 +
== strict RFC smtp server syntax ==
 +
 +
Disallowing illegal syntax in MAIL FROM or RCPT TO commands. This may cause problems with home-grown applications that send mail, and with ancient PC mail clients. For this reason, the requirement is disabled by default ("strict_rfc821_envelopes = no").
 +
 +
* Disallowing RFC 822 address syntax (example: "MAIL FROM: the dude <dude@example.com>").
 +
* Disallowing addresses that are not enclosed with <> (example: "MAIL FROM: dude@example.com").
 +
 +
use this syntax:
 +
 +
MAIL FROM:<marysue@hughes.net>
 +
250 2.1.0 Ok
 +
RCPT TO:<marysue@hughes.net>
 +
554 5.7.1 <marysue@hughes.net>
 +
 +
== With SMTP Authentication ==
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# Base64 encoding is described in section 6.8 of RFC 2045.
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# Users of the emacs editor can easily encode/decode base64 strings in the scratch buffer with the base64-encode-region and base64-decode-region commands.
 +
# The openssl enc subcommand can also be used to encode and decode base64.
 +
 +
C: AUTH LOGIN
 +
S: 334 VXNlcm5hbWU6
 +
C: d2VsZG9u
 +
S: 334 UGFzc3dvcmQ6
 +
C: dzNsZDBu
 +
S: 235 2.0.0 OK Authenticated
 +
 +
So you need to convert your username and password to Base64 encoding.
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 +
Here is a complete sample transaction:
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 +
220 smtp.b.hostedemail.com
 +
HELO smtp.hughes.net
 +
250 omf08.b.hostedemail.com
 +
AUTH LOGIN
 +
334 VXNlcm5hbWU6
 +
pxFuaWXlaAB4dQuyZBNub9V0
 +
334 UGFzc3dvcmQ6
 +
K83NqwU9MA=a
 +
235 2.0.0 Authentication successful
 +
MAIL FROM:<jennys@hughes.net>
 +
250 2.1.0 Ok
 +
RCPT TO:<jennys@hughes.net>
 +
250 2.1.5 Ok
 +
Data
 +
354 End data with <CR><LF>.<CR><LF>
 +
BLAH BLAH BLAH
 +
.
 +
250 2.0.0 Ok: queued as 15668AD9ED
 +
QUIT
 +
221 2.0.0 Bye
 +
  
 
[[Category:Computer_Technology]]
 
[[Category:Computer_Technology]]
 +
[[Category:Software]]

Latest revision as of 15:23, 1 July 2008

Standard SMTP Conversation

Mailserver says: 220 mailserver.domain.com SMTP ... Greetings
    Sender says: Helo sender.host.name
Mailserver says: 250 Nice to meet you
    Sender says: Mail From:<sender@his.address>
Mailserver says: 250 Sender ok
    Sender says: Rcpt To:<recipient@his.address>
Mailserver says: 250 Recipient ok
    Sender says: Data
Mailserver says: 354 Enter mail, end with "." on a line by itself
    Sender says: Blah, blah, blah...            
    Sender says: <enter>.<enter>
Mailserver says: 250 Message accepted for delivery
    Sender says: Quit

Example with strict syntax:

Here is an example of a transaction between a client (C) and an SMTP server (S) 

S: 220 smtp.commentcamarche.net SMTP Ready
C: EHLO machine1.commentcamarche.net
S: 250 smtp.commentcamarche.net
C: MAIL FROM:<webmaster@kioskea.net>

S: 250 OK
C: RCPT TO:<meandus@meandus.net>

S: 250 OK
C: RCPT TO:<tittom@tittom.fr>

S: 550 No such user here
C: DATA
S: 354 Start mail input; end with <CRLF>.<CRLF>

C: Subject: Hello
C: Hello Meandus,
C: How are things?
C:
C: See you soon!
C: <CRLF>.<CRLF>

S: 250 OK
C: QUIT
R: 221 smtp.commentcamarche.net closing transmission


SMTP Commands to Issue Example

HELO python.directsales.com
MAIL FROM:manager@computersupply.com
RCPT TO:james@directsales.com
Data
BLAH BLAH BLAH
.
QUIT

POP3 Commands to Issue Example

user krissyj
pass Xiu$78g
list
retr 1
dele 1
retr 2
dele 2
quit

strict RFC smtp server syntax

Disallowing illegal syntax in MAIL FROM or RCPT TO commands. This may cause problems with home-grown applications that send mail, and with ancient PC mail clients. For this reason, the requirement is disabled by default ("strict_rfc821_envelopes = no").

  • Disallowing RFC 822 address syntax (example: "MAIL FROM: the dude <dude@example.com>").
  • Disallowing addresses that are not enclosed with <> (example: "MAIL FROM: dude@example.com").

use this syntax: 

MAIL FROM:<marysue@hughes.net>
250 2.1.0 Ok
RCPT TO:<marysue@hughes.net>
554 5.7.1 <marysue@hughes.net>

With SMTP Authentication

  1. Base64 encoding is described in section 6.8 of RFC 2045.
  2. Users of the emacs editor can easily encode/decode base64 strings in the scratch buffer with the base64-encode-region and base64-decode-region commands.
  3. The openssl enc subcommand can also be used to encode and decode base64. 
C: AUTH LOGIN
S: 334 VXNlcm5hbWU6
C: d2VsZG9u
S: 334 UGFzc3dvcmQ6
C: dzNsZDBu
S: 235 2.0.0 OK Authenticated

So you need to convert your username and password to Base64 encoding.

Here is a complete sample transaction: 

220 smtp.b.hostedemail.com
HELO smtp.hughes.net
250 omf08.b.hostedemail.com
AUTH LOGIN
334 VXNlcm5hbWU6
pxFuaWXlaAB4dQuyZBNub9V0
334 UGFzc3dvcmQ6
K83NqwU9MA=a
235 2.0.0 Authentication successful
MAIL FROM:<jennys@hughes.net>
250 2.1.0 Ok
RCPT TO:<jennys@hughes.net>
250 2.1.5 Ok
Data
354 End data with <CR><LF>.<CR><LF>
BLAH BLAH BLAH
.
250 2.0.0 Ok: queued as 15668AD9ED
QUIT
221 2.0.0 Bye
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