(Latest Revision: Tue Apr 25 15:47:58 PDT 2017 )
Information on How to Use Simple Mail Transfer Protocol (SMPT) -------------------------------------------------------------------- Here is a Direct Interaction with SMTP on Mail Host CS.Csustan.Edu -------------------------------------------------------------------- john@linus.csustan.edu:(~) telnet cs.csustan.edu 25 Trying 130.17.70.80... Connected to cs.csustan.edu. Escape character is '^]'. 220 cs.csustan.edu ESMTP Postfix HELO linus.csustan.edu 250 cs.csustan.edu MAIL From:<john@linus.csustan.edu> 250 2.1.0 Ok RCPT To:<john@cs.csustan.edu> 250 2.1.5 Ok DATA 354 End data with <CR><LF>.<CR><LF> To: <john@cs.csustan.edu> From: <john@linus.csustan.edu> Date: Mon Apr 24 13:27:08 PDT 2017 Subject: This is a test message Hi John, Have a nice day. See you later. -- your self . 250 2.0.0 Ok: queued as D44655BAD32F QUIT 221 2.0.0 Bye Connection closed by foreign host. john@linus.csustan.edu:(~) ----------------------------------------------------------- ----------------------------------------------------------- ----------------------------------------------------------------- Here is the E-mail Received as a Result of the Interaction Above ----------------------------------------------------------------- From: john@linus.csustan.edu To: john@cs.csustan.edu Subject: This is a test message Received: from localhost (localhost [127.0.0.1]) by cs.csustan.edu (Postfix) with ESMTP id 3EF275BADAB0 for <john@cs.csustan.edu>; Mon, 24 Apr 2017 13:30:27 -0700 (PDT) Received: from cs.csustan.edu ([127.0.0.1]) by localhost (cs.csustan.edu [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 2wQqH5ZfgMxa for <john@cs.csustan.edu>; Mon, 24 Apr 2017 13:30:27 -0700 (PDT) Received: from linus.csustan.edu (linus.csustan.edu [130.17.70.46]) by cs.csustan.edu (Postfix) with SMTP id ACFAC5BADA82 for <john@cs.csustan.edu>; Mon, 24 Apr 2017 13:29:57 -0700 (PDT) Delivered-To: jjsarr@cs.csustan.edu Return-Path: <john@linus.csustan.edu> X-Virus-Scanned: amavisd-new at cs.csustan.edu Hi John, Have a nice day. See you later. -- your self ----------------------------------------------------------------- ----------------------------------------------------------------- ----------------------------------------------------------------- Here is the Interaction with Inputs Only ----------------------------------------------------------------- telnet cs.csustan.edu 25 HELO linus.csustan.edu MAIL From:<john@linus.csustan.edu> RCPT To:<john@cs.csustan.edu> DATA To: <john@cs.csustan.edu> From: <john@linus.csustan.edu> Date: Mon Apr 24 13:27:08 PDT 2017 Subject: This is a test message Hi John, Have a nice day. See you later. -- your self . QUIT ----------------------------------------------------------------- Here is the Interaction with Inputs Only and Modifications That Use False Information instead of Correct Information ----------------------------------------------------------------- telnet cs.csustan.edu 25 HELO bogus.csustan.edu MAIL From:<false@lfalse.foo.com> RCPT To:<john@cs.csustan.edu> DATA To: <nonesuch@noplace.nowhere.biz> From: <guesswho@guess.where.com> Date: Mon Apr 24 13:27:08 PDT 2017 Subject: This is a test message Hi John, Have a nice day. See you later. -- your self . QUIT ----------------------------------------------------------------- ----------------------------------------------------------------- ----------------------------------------------------------------- Here is The Message Received as a Result of Using The SMTP Commands with False Information ----------------------------------------------------------------- From: guesswho@guess.where.com To: nonesuch@noplace.nowhere.biz Subject: This is a test message Received: from localhost (localhost [127.0.0.1]) by cs.csustan.edu (Postfix) with ESMTP id AD38F5BAE282 for <john@cs.csustan.edu>; Mon, 24 Apr 2017 13:40:44 -0700 (PDT) Received: from cs.csustan.edu ([127.0.0.1]) by localhost (cs.csustan.edu [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id YKU3gJ_12Npv for <john@cs.csustan.edu>; Mon, 24 Apr 2017 13:40:44 -0700 (PDT) Received: from bogus.csustan.edu (linus.csustan.edu [130.17.70.46]) by cs.csustan.edu (Postfix) with SMTP id 77F6C5BAE278 for <john@cs.csustan.edu>; Mon, 24 Apr 2017 13:40:44 -0700 (PDT) Delivered-To: jjsarr@cs.csustan.edu Return-Path: <false@lfalse.foo.com> X-Virus-Scanned: amavisd-new at cs.csustan.edu Hi John, Have a nice day. See you later. -- your self ----------------------------------------------------------- -----------------------------------------------------------