Ubuntu/Commands/Mail Server CLI/ESMTP - Revision history

R00t: /* Full Session Example */

2015-04-12T23:17:34Z

‎Full Session Example

R00t: /* RCPT TO */

2015-04-12T23:17:19Z

‎RCPT TO

R00t: /* MAIL FROM */

2015-04-12T23:16:59Z

‎MAIL FROM

R00t at 23:13, 12 April 2015

2015-04-12T23:13:01Z

R00t at 23:12, 12 April 2015

2015-04-12T23:12:45Z

R00t at 23:12, 12 April 2015

2015-04-12T23:12:17Z

R00t: Created page with "Commands | dig | Mail Server CLI"

2015-04-12T23:08:16Z

Created page with "Commands | dig | Mail Server CLI"

New page

@@ Line 52: / Line 52: @@
 == Full Session Example ==
-  Franks-MacBook-Pro:~ fvazquez$ telnet exchange.postoffice.net 25
+  ~$ telnet exchange.postoffice.net 25
   Trying 165.212.120.200...
   Connected to exchange.postoffice.net.

@@ Line 35: / Line 35: @@
 ===== RCPT TO =====
 :Specifies who is receiving the message, but not necessarily the original recipient or CC.  I will not go into detail as more information is readily available online.
-  rcpt to:<fvazquez@perimeterusa.com>
+  rcpt to:<recipient@domain.com>
 2.1.5 Recipient OK
 ===== DATA =====
 :This is where the message is inserted, everthing including internet headers, message body, & attachments.

@@ Line 30: / Line 30: @@
 ===== MAIL FROM =====
 :Specifies who is sending the message, but not necessarily the sender of the message.  I will not go into detail as more information is readily available online.
-  mail from:<fvazquez@perimeterusa.com>
+  mail from:<sender@domain.com>
 2.1.0 Sender OK
 ===== RCPT TO =====
 :Specifies who is receiving the message, but not necessarily the original recipient or CC.  I will not go into detail as more information is readily available online.

@@ Line 2: / Line 2: @@
 [[Ubuntu/Commands/Mail_Server_CLI/POP|POP]] | [[Ubuntu/Commands/Mail_Server_CLI/IMAP|IMAP]] | [[Ubuntu/Commands/Mail_Server_CLI/ESMTP|ESMTP]]
 == ESMTP Overview ==
 ;ESMTP

@@ Line 1: / Line 1: @@
-[[Ubuntu/Commands|Commands]] | [[Ubuntu/Commands/dig|dig]] | [[Ubuntu/Commands/Mail_Server_CLI|Mail Server CLI]]
+[[Ubuntu/Commands|Commands]] | [[Ubuntu/Commands/dig|dig]] | [[Ubuntu/Commands/Mail_Server_CLI|Mail Server CLI]]<br>
+== POP Overview ==
-[[Mail Server CLI|Mail Server CLI]] | [[Mail Server CLI/POP|POP]] | [[Mail Server CLI/IMAP|IMAP]] | [[Mail Server CLI/ESMTP|ESMTP]]
 == ESMTP Overview ==
 ;ESMTP

← Older revision		Revision as of 23:12, 12 April 2015
Line 1:		Line 1:
	[[Ubuntu/Commands\|Commands]] \| [[Ubuntu/Commands/dig\|dig]] \| [[Ubuntu/Commands/Mail_Server_CLI\|Mail Server CLI]]		[[Ubuntu/Commands\|Commands]] \| [[Ubuntu/Commands/dig\|dig]] \| [[Ubuntu/Commands/Mail_Server_CLI\|Mail Server CLI]]
		+
		+
		+	[[Mail Server CLI\|Mail Server CLI]] \| [[Mail Server CLI/POP\|POP]] \| [[Mail Server CLI/IMAP\|IMAP]] \| [[Mail Server CLI/ESMTP\|ESMTP]]
		+	== ESMTP Overview ==
		+	;ESMTP
		+	:Extended Simple Mail Transport Protocol : Application layer internet standard protocol that uses TCP/IP.
		+	Testing from a command line interface provides a virtually guaranteed way of confirming basic requirements for a successfully connection. Observations and responses observed come directly from the mail server rather than trying to interpret an application's translation of the scenario. Keep in mind that testing from a command line is generally in plain text, which is insecure, unless you use a connect application such as openssl<br\>
		+	<br\>
		+	While much easier to test from a Linux terminal, it is possible to test from a windows command prompt, however, keep in mind that Windows does not allow you to backspace or delete any mistakes that you make. While unconfirmed, based on behavior it appears that Windows actively submits every keystroke to the mail server rather than waiting for "return".
		+
		+	== ESMTP Commands ==
		+	===== EHLO =====
		+	:The required first command, is the introduction to the mail server. You can either list a FQDN or Email address. It also lists what commands the server has available for usage.
		+	ehlo perimeterusa.com
		+	250-esmail01.eservices.usa.net Hello perimeterusa.com [10.45.64.3], pleased to meet you
		+	250-SIZE 52428800
		+	250-STARTTLS
		+	250-PIPELINING
		+	250-8BITMIME
		+	250 HELP
		+	===== AUTH LOGIN =====
		+	:Only used for mail servers that require authentication, this requires that the username and password be passed to the server in BASE64 encoding. openssl is capable of encoding/decoding text to BASE64. This step is not required if you are connecting with the recipient's mail exchanger directly, IE connecting to a gmail MX to deliver a message to a gmail recipient.
		+	auth login
		+	334 VXNlcm5hbWU6
		+	dXNlcm5hbWU=
		+	334 UGFzc3dvcmQ6
		+	cGFzc3dvcmQ=
		+	235 2.7.0 Authentication successful
		+
		+	===== MAIL FROM =====
		+	:Specifies who is sending the message, but not necessarily the sender of the message. I will not go into detail as more information is readily available online.
		+	mail from:<fvazquez@perimeterusa.com>
		+	250 2.1.0 Sender OK
		+	===== RCPT TO =====
		+	:Specifies who is receiving the message, but not necessarily the original recipient or CC. I will not go into detail as more information is readily available online.
		+	rcpt to:<fvazquez@perimeterusa.com>
		+	250 2.1.5 Recipient OK
		+	===== DATA =====
		+	:This is where the message is inserted, everthing including internet headers, message body, & attachments.
		+	data
		+	354 Start mail input; end with <CRLF>.<CRLF>
		+	test
		+	.
		+	250 2.6.0 <0b39248e-b2fe-4454-9dc8-d0066082b054@S1P5HUB2.EXCHPROD.USA.NET> [InternalId=62880244] Queued mail for delivery
		+
		+	===== QUIT =====
		+	:Fairly self explanatory, terminates your session with the server.
		+	quit
		+	221 2.0.0 Service closing transmission channel
		+
		+	== Full Session Example ==
		+	Franks-MacBook-Pro:~ fvazquez$ telnet exchange.postoffice.net 25
		+	Trying 165.212.120.200...
		+	Connected to exchange.postoffice.net.
		+	Escape character is '^]'.
		+	220 exchange.postoffice.net Microsoft ESMTP MAIL Service ready at Fri, 12 Oct 2012 04:28:29 +0000
		+	ehlo talladegaraceway.com
		+	250-esmail01.eservices.usa.net Hello talladegaraceway.com [10.45.64.3], pleased to meet you
		+	250-SIZE 52428800
		+	250-STARTTLS
		+	250-PIPELINING
		+	250-8BITMIME
		+	250 HELP
		+	auth login
		+	334 VXNlcm5hbWU6
		+	cmlja3lib2JieUB0YWxsYWRlZ2FyYWNld2F5LmNvbQ==
		+	334 UGFzc3dvcmQ6
		+	c2hha2VhbmRiYWtl
		+	235 2.7.0 Authentication successful
		+	mail from:<rickybobby@talladegaraceway.com>
		+	250 2.1.0 Sender OK
		+	rcpt to:<chazmichaelmichaels@usfsa.org>
		+	250 2.1.5 Recipient OK
		+	data
		+	354 Start mail input; end with <CRLF>.<CRLF>
		+	Received: from S1P5DAG2C.EXCHPROD.USA.NET ([169.254.2.236]) by
		+	S1P5HUB2.EXCHPROD.USA.NET ([10.120.223.32]) with mapi id 14.02.0247.003; Fri,
		+	27 Apr 2012 23:29:55 +0000
		+	From: "Ricky Bobby" <rickybobby@talladegaraceway.com>
		+	To: "Chaz Michael Michaels" <chazmichaelmichaels@usfsa.org>
		+	Subject: Shake & Bake
		+	Thread-Topic: Shake & Bake
		+	Thread-Index: Ac0kzaXj1SGKcXxTRU21ts6UZGL4Xw==
		+	Date: Fri, 27 Apr 2012 23:29:54 +0000
		+	Message-ID: <3D4A65565EFB3D4B9A541F98D0DA17D7143C2010@S1P5DAG2C.EXCHPROD.USA.NET>
		+
		+	Content-Type: text/plain; charset="US-ASCII"
		+	Content-Transfer-Encoding: 7bit
		+
		+	Hello,
		+
		+	Shake and Bake forever! The Iron Lotus sucks.
		+
		+	Yours Truely,
		+	Ricky Bobby
		+	.
		+	250 2.6.0 <0b39248e-b2fe-4454-9dc8-d0066082b054@S1P5HUB2.EXCHPROD.USA.NET> [InternalId=62880244] Queued mail for delivery
		+	quit
		+	221 2.0.0 Service closing transmission channel