C=US; A=IMX: draft-ietf-x400ops-admd-03.txt -- (ID for review)

[Einar Stefferud <[e-mail]>]


 
OSI-X400ops Working Group					 E. Stefferud
INTERNET DRAFT: A=IMX		          Network Management Associates, Inc.
draft-ietf-x400ops-admd-03.txt				         October 1993

			     C=US; A=IMX
		      (Expires: January 26 1993)

Status Of this Memo
 
   This document provides information for the Internet community.  
   It does not specify an Internet standard.  Distribution of this 
   memo is unlimited. 

Abstract

  This document establishes an Internet Based X.400 Administrative
  Management Domain (ADMD) with the name "A=IMX", for use in the
  United States of America (C=US), according to the applicable rules
  of CCITT Recommendations and ISO Standards, and in keeping with
  existing regulatory practices in the United States of America.  It
  also establishes a naming authority under the Internet Assigned
  Numbers Authority (IANA) to register and openly publish Private
  Management Domain (PRMD) names subordinate to A=IMX under C=US.

  The name "IMX is registered with the American National Standards
  Institute (ANSI) MHS Management Domain (MHSMD) register as is
  appropriate for names that are to be used as ADMD names in the
  United States of America (c=US).

  Any chosen C=US ADMD name is a matter of arbitrary choice as long as
  it does not conflict with any other choice of ADMD name by any other
  ADMD Service Provider operating in association with C=US.
  Registration of IMX as the ADMD name for the Internet in C=US will
  serve to avoid any possible name collision, and will enable Internet
  PRMD operators to obtain and register PRMD names for use with X.400.

  NOTE: Other countries may or may not take similar actions, at their
        sovereign discretion.  How C=US and other Internet based ADMD
        operations in other countries should or should not be
        coordinated is not addressed in this document.

1. Introduction

  X.400 is the International Telegraph and Telephone Consultative
  Committee (CCITT) identifier for Message Handling System (MHS)
  Recommendations [X.400].  The ISO/IEC identifier for the matching
  ISO/IEC Standard is IS-10021 [10021].  CCITT was recently renamed to
  be the International Telecommunications Union - Telecommunication
  (ITU-T).

  Many organizations in the Internet community wish to deploy X.400
  for the purpose of exchanging Electronic Mail messages.  Working
  within X.400 specifications, this document establishes and names the
  required C=US Internet ADMD to meet X.400 infrastructure needs.


Stefferud		draft-ietf-x400ops-admd-03.txt	       [Page 1]

INTERNET DRAFT: A=IMX  	draft-ietf-x400ops-admd-03.txt	   October 1993

  The X.400 Recommendations call for a specific naming and addressing
  infrastructure consisting of Administrative Management Domain (ADMD)
  entities within each sovereign Country (C), where each ADMD must
  have an unambiguous name within its given country and where each
  ADMD then becomes a naming authority for the registration of
  unambiguous names of subordinate Private Management Domain (PRMD)
  entities.

  In combination, the set of domain attributes, with their associated
  name values, constitute tagged attribute=value pairs which can be
  used to form ORAddresses (e.g., C=US; A=IMX; P=SOME-NAME; O=COMPANY;
  OU=Sales) [X.411, Figure 2, Part 30 of 41].

  This document, is only concerned with ADMD and PRMD levels.  All
  levels below PRMD are a local matter within each PRMD.

2.  X.400 Requirements on ADMD and PRMD Names

  ADMD and PRMD Name values are limited by the X.400 Recommendations
  to a maximum length of 16 PrintableString characters [X.411, Figure
  B-1 (Part 2 of 3)].  Case, multiple white space characters, and
  leading or trailing white spaces are all non-distinguishing for
  purposes of matching [F.401, Section 5.3].

  The PrintableString character set is essentially US-ASCII without:

			@       atsign
			!       exclamation point (bang)
			%       percent sign
			_       underscore
			"	double quote

  Specifically, PrintableString is a subset of International Alphabet
  Number 5 (IA5), shown in this table copied from [X.208, Table 5].
			______________________________
			Name          Graphic
			______________________________
			Capital letters     A,B,...Z
			Small letters       a,b,...z
			Digits              0,1,...9
			Space               (space)
			Apostrophe          '
			Left parentheses    (
			Right parentheses   )
			Plus sign           +
			Comma               ,
			Hyphen              -
			Full stop           .
			Solidus             /
			Colon               :
			Equal sign          =
			Question mark       ?
			______________________________
			Source:  CCITT X.208, Table 5
 
Stefferud		draft-ietf-x400ops-admd-03.txt         [Page 2]

INTERNET DRAFT: A=IMX	draft-ietf-x400ops-admd-03.txt	   October 1993


3.  Relationship to Domain Name System (DNS)

  The X.400 naming scheme has certain similarities to the Internet
  Domain Naming System (DNS) [DNS], which is also global and
  hierarchical with distribution of naming authority to entities at
  each subordinate level in the naming tree.  Many thousands of names
  have already been registered in the DNS.  The DNS coincidentally
  uses the same international register of country codes (ISO 3166
  two-character codes) for its top level names (e.g,. US and GB),
  except that the DNS also includes UK for interesting historical
  reasons, and includes some three character top level domain names.
  Currently, these are COM, EDU, GOV, INT, MIL, NET, and ORG.

  It is known that additional two character country codes will be
  added to ISO 3166 and to the DNS.

  It is not known whether or not additional three character top level
  names will be added to the DNS.  It is not known whether new top
  level names of greater than 3 characters may be added to the DNS.

  DNS names are limited to 64 characters of US-ASCII letters (A-Z),
  digits (0-9), hyphen (-) and dot (.), with dot restricted to use as
  a constructive delimiter between concatenated names from ascending
  DNS levels.  Case is non-distinguishing for purposes of matching.
  Embedded white space is not allowed.  Leading and trailing white
  space is ignored for purposes of matching.

4.  Name of the C=US Internet ADMD

  The name of the C=US Internet ADMD is "IMX".

5.  PRMD Names in C=US; A=IMX

  PRMD Name Registration is accomplished by overt application to the
  IANA registration agent by the registrant.  A registration form will
  be supplied by the IANA registration agent.  All IANA registered
  PRMD names will be openly published by the IANA for public access.

  To align with CCITT X.402 and ISO/IEC 10021-2, the IANA registrar
  shall not register the name values of "single-space" [X.402, Section
  18.3.1] or a single zero (0).  [CCITT-MHS, Section 3.2.3]  
  These special names are reserved in X.400 for special purposes.

  All IANA registered PRMD names are assumed to be the rightful
  intellectual property of the registration applicant, but may be
  subject to legal challenge of the applicant's right to use the name
  at any time.  The IANA takes no position with regard to the legal
  "right to use" of any registered name, and leaves resolution of any
  challenge to the challenge parties, which may or may not involve
  litigation.  In the event of challenge to any registered PRMD name,
  the IANA only records in its register the result of whatever
  resolution may occur, upon notification of the resolution by the
  registrant or by some other authority with proper jurisdiction.


Stefferud		draft-ietf-x400ops-admd-03.txt	       [Page 3]

INTERNET DRAFT: A=IMX   draft-ietf-x400ops-admd-03.txt     October 1993


6.  Sources of PRMD Registered Names

  PRMD names registered by the IANA under A=IMX are drawn from:

	(1) DNS names already registered in the DNS naming tree, which
            do not exceed the X.400 limit of 16 characters, or

	(2) any other name that is guaranteed not to conflict with
            any other IANA registered PRMD name under C=US; A=IMX,
            or any current or possible future DNS name.

  Examples of (1) are:

     P=nma.com; P=uci.edu; P=nic.ddn.mil; P=nsf.gov; P=sintef.no

  NOTE:  P=cnri.reston.va.us contains 17 characters and thus is not
         permitted by X.400 to be used as a PRMD name.  This may be
         unfortunate for CNRI, but the cause of the problem is in the
         X.400 limit of 16 PrintableString Characters, not the DNS.

  NOTE:  There is no reason to disallow C=US; A=IMX; P=sintef.no if
         sintef.no wishes to so register.  Thus it is not proscribed.

  The key requirement is that a PRMD name must be an unambiguous
  string of permitted characters uniquely registered to a single owner
  under the registering ADMD, so any existing DNS name with 16 or
  fewer characters under any DNS top level domain may be used as a
  PRMD name in C=US; A=IMX because all such DNS names are already
  unambiguous and uniquely assigned to registrants by the IANA in the
  Internet DNS, and they only contain allowed characters.

  This is a secondary use of a DNS name.  If a name is ever removed
  from the DNS for any reason, then it must also be removed from the
  IANA PRMD name register, if it is so registered.  DNS names are not
  automatically registered as PRMD names.

  Examples of (2) are:

      P=ESnet;  P=NASA;  P=Boeing Seattle;  P=XYZZY;  P=CALTRANS

  All such names must not conflict with any possible current or future
  DNS name that may or may not ever be registered.

7.  Proscribed PRMD Names

  The following PRMD Names are proscribed, in accordance with the
  rules given in Section 6 above:

  (1) Any PRMD name that is also registered in the DNS, unless it is
      registered in the DNS by the same registration applicant.



 
Stefferud		draft-ietf-x400ops-admd-03.txt	       [Page 4]

Internet Draft:  A=IMX  draft-ietf-x400ops-admd-03.txt     October 1993


  (2) Any PRMD name that ends in a dot (.) followed by any number of
      characters of the kind allowed in DNS top-level domain names,
      unless also registered in the DNS by the same registration
      applicant.

8. Operation Of C=US; A=IMX

  Operating rules for elements of the X.400 Mail Transfer System
  (MTS) in the Internet are not addressed in this document.
 
  The rules for interconnection of A=IMX PRMDS with other ADMDS are
  not addressed in this document.

9.  Security Considerations

  This document does not address any aspect of security.  It neither
  exacerbates nor reduces any security problems or risks that are
  already inherent in X.400 technologies or deployed systems.

10.  References


  [X.208]  CCITT Recommendation X.208, 1988, 
         Specification of Abstract Syntax Notation - One (ASN.1)


  [X.400]  CCITT Recommendation X.400, 1988,
         Message Handling System and Service Overview.


  [10021]	 ISO/IEC 10021-1, 1988, Information Processing Systems --
	 Text Communication -- MOTIS -- System and Service
	 Overview.


  [F.401]  CCITT Recommendation F.400, 1988, 
         Naming and Addressing for Public Message Handling Services.
 

  [X.402]  CCITT Recommendation X.402, 1988, 
         Message Handling Systems: Overall Architecture.
 
         ISO/IEC 10021-2, 1988, Information Processing Systems --
         Text Communication -- MOTIS -- Overall Architecture. 
 
  [X.411]  CCITT Recommendation X.411, 1988, 
         Message Handling Systems: Message Transfer System: 
         Abstract Service Definition and Procedures.
 
         ISO/IEC 10021-4, 1988, Information Processing Systems --
         Text Communication -- MOTIS -- Message Transfer System:
         Abstract Service Definition and Procedures.


Stefferud		draft-ietf-x400ops-admd-03.txt	       [Page 5]

INTERNET DRAFT: A=IMX   draft-ietf-x400ops-admd-03.txt     October 1993
 

  [MHS]    CCITT MHS, March 1992, Implementors' Guide, Version 8 [1988]


  [ASCII]  Coded Character Set--7-Bit American Standard Code
         for Information Interchange, ANSI X3.4-1986.


  [DNS]    Paul V.  Mockapetris.  Domain Names -- Concepts and
         Facilities. Request for Comments 1034, DDN Network
         Information Center, SRI International, November 1987.



11. Author's Address

Einar A. Stefferud				Telephone: [phone]
Network Management Associates, Inc.		Facsimile: [phone]
10301 Drey Lane					Internet:     [e-mail]
Huntington Beach, CA  92647-5615, USA



































Stefferud		draft-ietf-x400ops-admd-03.txt	       [Page 6]

INTERNET DRAFT: A=IMX	draft-ietf-x400ops-admd-03.txt     October 1993

Appendix: Discussion of ADMD name value chosen for C=US portion of the
          global Internet

  NOTE: If and when this RFC is published as an Informational or
        Experimental
 RFC, this Appendix may be removed

  The name value of "A=IMX" has been arbitrarily chosen because it is
  short and suggests the idea of mail exchange, but it is not an
  acronym for any specific set of words.  It is just an easily
  remembered, easily typed set of characters without any assigned
  meaning.

  It is required to obtain consensus for this choice of name from the
  IETF, the IAB, and the Internet Society and then the right to legal
  use of the name must be established in the United States of America.

  Choosing a name for something like an ADMD is a political issue, and
  requires consideration of the rights of others to use the chosen
  name.  In the Internet, it is not yet clear who should act to secure
  legal rights to the use of a selected name.

  This document has been developed to lay the technical groundwork
  without getting caught up on the political/legal/administrative
  issues of name establishment.

  With adoption of this document as the working basis for C=US ADMD
  and PRMD name registration, we should next be able to progress on to
  legal action to secure the right to use the chosen name.

  In order to progress with this work, the University of Wisconsin,
  supported with NSF Grant Funds, has taken the action to register
  A=IMX in the ANSI MHSMD register as appropriate for any C=US entity
  wishing to establish an operational ADMD which can then register
  subordinate PRMD names.  The University of Wisconsin will hold
  the registration for the benefit of the C=US Internet Community,
  with the understanding that the registration will be transferred to
  another appropriate holder if and when one arises.

  <Single-Space> is not available for Internet ADMD Name use in C=US,
  in that it is reserved by the [CCITT X.400 | ISO MOTIS]
  [Recommendations | Standards] for the name of a virtual ADMD that is
  to be approved by some National Body in C=US.  This issue is of no
  concern to the IETF, IAB, or ISOC as long as we do not attempt to
  use the proscribed name.

  We should not seek approval of any C=US National Body in the
  establishment of an Internet ADMD in C=US.  No other C=US ADMD has
  sought nor obtained any such approval, and thus the precedent has
  been set for the C=US Internet community to self assert ADMD status.






Stefferud		draft-ietf-x400ops-admd-03.txt	       [Page 7]