IPP> RFC 2487 - SMTP Svc Ext for Secure SMTP over TLS (Jan 1999)

IPP> RFC 2487 - SMTP Svc Ext for Secure SMTP over TLS (Jan 1999)

IPP> RFC 2487 - SMTP Svc Ext for Secure SMTP over TLS (Jan 1999)

Ira McDonald imcdonal at sdsp.mc.xerox.com
Sat Jan 23 19:10:26 EST 1999

Hi folks,

Abstract below

- Ira McDonald

Network Working Group                                     P. Hoffman
Request for Comments: 2487                  Internet Mail Consortium
Category: Standards Track                               January 1999

            SMTP Service Extension for Secure SMTP over TLS

Status of this Memo

   This document specifies an Internet standards track protocol for the
   Internet community, and requests discussion and suggestions for
   improvements.  Please refer to the current edition of the "Internet
   Official Protocol Standards" (STD 1) for the standardization state
   and status of this protocol.  Distribution of this memo is unlimited.

Copyright Notice

   Copyright (C) The Internet Society (1999).  All Rights Reserved.

1. Abstract

   This document describes an extension to the SMTP service that allows
   an SMTP server and client to use transport-layer security to provide
   private, authenticated communication over the Internet. This gives
   SMTP agents the ability to protect some or all of their
   communications from eavesdroppers and attackers.

2. Introduction

   SMTP [RFC-821] servers and clients normally communicate in the clear
   over the Internet. In many cases, this communication goes through one
   or more router that is not controlled or trusted by either entity.
   Such an untrusted router might allow a third party to monitor or
   alter the communications between the server and client.

   Further, there is often a desire for two SMTP agents to be able to
   authenticate each others' identities. For example, a secure SMTP
   server might only allow communications from other SMTP agents it
   knows, or it might act differently for messages received from an
   agent it knows than from one it doesn't know.

   TLS [TLS], more commonly known as SSL, is a popular mechanism for
   enhancing TCP communications with privacy and authentication. TLS is
   in wide use with the HTTP protocol, and is also being used for adding
   security to many other common protocols that run over TCP.


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