RFC 1664 (rfc1664) - Page 1 of 23
Using the Internet DNS to Distribute RFC1327 Mail Address Mapping Tables
Alternative Format: Original Text Document
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
RFC 1327 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
RFC 822 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 RFC 822 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 RFC 822 and foreign
world.
RFC 1327 describes a set of mappings which will enable interworking
between systems operating the CCITT X.400 (1984/88) Recommendations
Allocchio, Bonito, Cole, Giordano & Hagens