RFC 2645 (rfc2645) - Page 1 of 9

ON-DEMAND MAIL RELAY (ODMR) SMTP with Dynamic IP Addresses

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Network Working Group                                        R. Gellens
Request for Comments: 2645                                     Qualcomm
Category: Standards Track                                   August 1999


                      ON-DEMAND MAIL RELAY (ODMR)
                    SMTP with Dynamic IP Addresses

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.

Table of Contents

    1.  Abstract . . . . . . . . . . . . . . . . . . . . . . . . . .  1
    2.  Conventions Used in this Document . . . . . . . . . . . . . . 2
    3.  Comments . . . . . . . . . . . . . . . . . . . . . . . . . .  2
    4.  Description . . . . . . . . . . . . . . . . . . . . . . . . . 2
    5.  States . . . . . . . . . . . . . . . . . . . . . . . . . . .  3
      5.1.  Initial State . . . . . . . . . . . . . . . . . . . . . . 4
        5.1.1.  EHLO . . . . . . . . . . . . . . . . . . . . . . . .  4
        5.1.2.  AUTH  . . . . . . . . . . . . . . . . . . . . . . . . 4
        5.1.3.  QUIT . . . . . . . . . . . . . . . . . . . . . . . .  4
      5.2.  Authenticated State . . . . . . . . . . . . . . . . . . . 4
        5.2.1.  ATRN (Authenticated TURN)  . . . . . . . . . . . . .  4
      5.3.  Reversed State  . . . . . . . . . . . . . . . . . . . . . 5
      5.4.  Other Commands . . . . . . . . . . . . . . . . . . . . .  6
    6.  Example On-Demand Mail Relay Session: . . . . . . . . . . . . 6
    7.  Response Codes . . . . . . . . . . . . . . . . . . . . . . .  6
    8.  Security Considerations . . . . . . . . . . . . . . . . . . . 6
    9.  Acknowledgments  . . . . . . . . . . . . . . . . . . . . . .  7
   10.  References  . . . . . . . . . . . . . . . . . . . . . . . . . 7
   11.  Author's Address   . . . . . . . . . . . . . . . . . . . . .  8
   12.  Full Copyright Statement  . . . . . . . . . . . . . . . . . . 9

1.  Abstract

   With the spread of low-cost computer systems and Internet
   connectivity, the demand for local mail servers has been rising.
   Many people now want to operate a mail server on a system which has



Gellens                     Standards Track
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