RFC3974-SMTP Operational Experience in Mixed IPv4v6 Environments

Network Working Group                                        M. Nakamura
Request for Comments: 3974                              Kyoto University
Category: Informational                                        J. Hagino
                                                 IIJ Research Laboratory
                                                            January 2005


       SMTP Operational Experience in Mixed IPv4/v6 Environments

Status of This Memo

   This memo provides information for the Internet community.  It does
   not specify an Internet standard of any kind.  Distribution of this
   memo is unlimited.

Copyright Notice

   Copyright (C) The Internet Society (2005).

IESG Note:

   The content of this RFC was at one time considered by the IETF, and
   therefore it may resemble a current IETF work in progress or a
   published IETF work.  This RFC is not a candidate for any level of
   Internet Standard.  The IETF disclaims any knowledge of the fitness
   of this RFC for any purpose, and in particular notes that the
   decision to publish is not based on IETF review for such things as
   security, congestion control, or inappropriate interaction with
   deployed protocols.  The RFC Editor has chosen to publish this
   document at its discretion.  Readers of this RFC should exercise
   caution in evaluating its value for implementation and deployment.

   This document contains a specific interpretation of the applicability
   of the MX processing algorithm in RFC 2821, Section 5, to dual-stack
   environments.  Implementors are cautioned that they must reference
   RFC 2821 for the full algorithm; this document is not to be
   considered a full restatement of RFC 2821, and, in case of ambiguity,
   RFC 2821 is authoritative.

Abstract

   This document discusses SMTP operational experiences in IPv4/v6 dual
   stack environments.  As IPv6-capable SMTP servers are deployed, it
   has become apparent that certain configurations of MX records are
   necessary for stable dual-stack (IPv4 and IPv6) SMTP operation.  This
   document clarifies the existing problems in the transition period
   between IPv4 SMTP and IPv6 SMTP.  It also defines operational
   requirements for stable IPv4/v6 SMTP operation.

   This document does not define any new protocol.

1.  Introduction

   Delivery of mail messages to the final mail drop is not always done
   by direct IP communication between the submitter and final receiver,


            

              
 
                
[1] [2] [3] [4] [5] [6] [7] [8] [9] 下一页 
              
            
            

            

            
            复制本页网址和标题，发送给你QQ/Msn的好友一起分享

            

            上一篇:RFC3975-OMA-IETF Standardization Collaboration

            

            下一篇:RFC3972-Cryptographically Generated Addresses (CGA)