Browse Prior Art Database

ON-DEMAND MAIL RELAY (ODMR) SMTP with Dynamic IP Addresses (RFC2645)

IP.com Disclosure Number: IPCOM000003233D
Original Publication Date: 1999-Aug-01
Included in the Prior Art Database: 2019-Feb-11
Document File: 9 page(s) / 11K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

R. Gellens: AUTHOR

Related Documents

10.17487/RFC2645: DOI

Abstract

This memo proposes a new service, On-Demand Mail Relay (ODMR), which is a profile of SMTP, providing for a secure, extensible, easy to implement approach to the problem. [STANDARDS-TRACK]

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 21% of the total text.

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 [Page 1]

RFC 2645 On-Demand Mail Relay August 1999

only an intermittent connection to a service provider. If the system has a static IP address, the ESMTP ETRN command [ETRN] can be used. However, systems with dynamic IP addresses (which are very common with low-cost connections) have no widely-deployed solution.

This memo proposes a new service, On-Demand Mail Relay (ODMR), which is a profile of SMTP [SMTP, ESMTP], providing for a secure, extensible, easy to implement approach to the problem.

2. Conventions Used in this Document

Because the client and server roles reverse during the session, to avoid confusion, the terms "customer" and "provider" will be used in place of "client" and "server", although of course this protocol may be useful in cases other than commercial service providers and customers.

In examples, "P:" is used to ind...

Processing...
Loading...