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Using the Internet DNS to Distribute RFC1327 Mail Address Mapping Tables (RFC1664)

IP.com Disclosure Number: IPCOM000002500D
Original Publication Date: 1994-Aug-01
Included in the Prior Art Database: 2000-Sep-12
Document File: 18 page(s) / 47K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

C. Allocchio: AUTHOR [+5]

Abstract

This memo defines how to store in the Internet Domain Name System the mapping information needed by e-mail gateways and other tools to map RFC822 domain names into X.400 O/R names and vice versa. Mapping information can be managed in a distributed rather than a centralised way. Gateways located on Internet hosts can retrieve the mapping information querying the DNS instead of having fixed tables which need to be centrally updated and distributed. This memo is a joint effort of X400 operation working group (x400ops) and RARE Mail and Messaging working group (WG-MSG).

This text was extracted from a ASCII Text document.
This is the abbreviated version, containing approximately 6% of the total text.

Network Working Group C. Allocchio

Request for Comments: 1664 A. Bonito

Category: Experimental GARR-Italy

B. Cole

Cisco Systems Inc.

S. Giordano

Centro Svizzero Calcolo Scientifico

R. Hagens

Advanced Network & Services

August 1994

Using the Internet DNS to Distribute

RFC1327 Mail Address Mapping Tables

Status of this Memo

This memo defines an Experimental Protocol for the Internet

community. This memo does not specify an Internet standard of any

kind. Distribution of this memo is unlimited.

Abstract

This memo defines how to store in the Internet Domain Name System the

mapping information needed by e-mail gateways and other tools to map

RFC822 domain names into X.400 O/R names and vice versa. Mapping

information can be managed in a distributed rather than a centralised

way. Gateways located on Internet hosts can retrieve the mapping

information querying the DNS instead of having fixed tables which

need to be centrally updated and distributed. This memo is a joint

effort of X400 operation working group (x400ops) and RARE Mail and

Messaging working group (WG-MSG).

1. Introduction

The connectivity between the Internet SMTP mail and other mail

services, including the Internet X.400 mail and the commercial X.400

service providers, is assured by the Mail eXchanger (MX) record

information distributed via the Internet Domain Name System (DNS). A

number of documents then specify in details how to convert or encode

addresses from/to RFC822 style to the other mail system syntax.

However, only conversion methods provide, via some algorithm or a set

of mapping rules, a smooth translation, resulting in addresses

indistinguishable from the native ones in both RFC822 and foreign

world.

RFC1327 describes a set of mappings which will enable interworking

between systems operating the CCITT X.400 (1984/88) Recommendations

and systems using the RFC822 mail protocol, or protocols derived from

RFC822. That document addresses conversion of services, addresses,

message envelopes, and message bodies between the two mail systems.

This document is concerned with one aspect of RFC1327: the mechanism

for mapping between X.400 O/R addresses and RFC822 domain names. As

described in Appendix F of RFC1327, implementation of the mappings

requires a database which maps between X.400 O/R addresses and domain

names, and this database is statically defined.

This approach requires many efforts to maintain th...