rfc1168.txt

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RFC 1168      Intermail and Commercial Mail Relay Services     July 1990


   In order to further reduce the hazards of string changes in the
   commercial system software, an AI component could be added to the
   commercial system interfaces.  Such an AI component might be able to
   "figure out" what marker a new prompt represents and to remember it.

ACCESS INFORMATION

   For instructions on how to use Intermail and CMR contact Intermail-
   [e-mail].

REFERENCES

   [1]  Cohen, D., "A Suggestion for Internet Message Forwarding for
        MOSIS", IEN-180, USC/Information Sciences Institute, March 1981.

   [2]  Crocker, D., "Standard for the Format of ARPA Internet Text
        Messages", RFC-822, University of Delaware, August 1982.

   [3]  DeSchon, A. L., "MCI Mail/ARPA Mail Forwarding", USC/Information
        Sciences Institute, ISI Research Report, RR-84-141, August 1984.

   [4]  DeSchon, A. L., "INTERMAIL, An Experimental Mail Forwarding
        System", USC/Information Sciences Institute, ISI Research
        Report, RR-85-158, September 1985.

   [5]  Kingston, D., "MMDF II: A Technical Review", Usenix Conference,
        Salt Lake City, August 1984.

   [6]  Ward, C. E., "The Commercial Mail Relay Project:  Intermail on
        UNIX", USC/Information Sciences Institute, 1988.





















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RFC 1168      Intermail and Commercial Mail Relay Services     July 1990


APPENDIX A

   The Internet and Connected Networks

   The Internet is a network of networks interconnected by gateways or
   routers. The common element is the TCP/IP protocol suite.  The
   Internet now includes approximately 800 networks and 100,000 host
   computers.  The Internet is made up of local area networks in
   research institutes and university campuses, regional networks, and
   long-haul networks.  These resources are supported by the using
   organizations and by several US goverment agencies (including DARPA,
   NSF, NASA, DOE, and NIH).   The long-haul networks in the Internet
   are the ARPANET, the MILNET, the NSFNET Backbone, the NASA Science
   Internet (NSI), and the DOE Energy Science Network (ESNET).

   Other systems using TCP/IP or other protocols may be networks of
   networks or "internets" with a lower case "i".  The capital "I"
   Internet is the one described above.

   There are other networks with (semi-) compatible electronic mail
   systems. These include BITNET (and EARN and NETNORTH), UUCP (and
   EUNET), CSNET, ACSNET, and JANET.  Users of electronic mail may not
   necessarily be aware of the boundaries between these systems and the
   Internet.

   The Domain Name System (DNS) is a mechanism used in the Internet for
   translating names of host computers into addresses.  The DNS also
   allows host computers not directly on the Internet to have registered
   names in the same style.

   BITNET (Because It's Time NETwork)

   BITNET has about 2,500 host computers, primarily at universities, in
   many countries.  It is managed by EDUCOM, which provides
   administrative support and information services.  There are three
   main constituents of the network: BITNET in the United States and
   Mexico, NETNORTH in Canada, and EARN in Europe.  There are also
   AsiaNet, in Japan, and connections in South America.  Gateways exist
   between BITNET and the Internet.  The most common gateway used is
   CUNYVM.CUNY.EDU.

   CSNET (The Computer + Science Network)

   CSNET has 180 member organizations, primarily computer science
   research laboratories at universities and research institutes,
   including international affiliates in more than a dozen countries.
   CSNET has adopted DNS-style names for all its host computers.  It is
   administered by the University Corporation for Atmospheric Research



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RFC 1168      Intermail and Commercial Mail Relay Services     July 1990


   (UCAR) and provides administrative support and information services
   via the CSNET Information Center (CIC) at Bolt Beranek and Newman
   (BBN). The gateway between CSNET and the Internet is RELAY.CS.NET.

   Note: CSNET and BITNET have officially merged into a single
   organization as of October 1, 1989.

   UUCP (UNIX to UNIX Copy)

   UUCP is a protocol, a set of files, and a set of commands for copying
   data files from one UNIX machine to another.  These procedures are
   widely used to implement a hop-by-hop electronic mail system.  This
   simple mechanism allows any UNIX host computer to join the system by
   arranging a connection (dial-up or permanent) with any UNIX host
   already in the system.  In the basic UUCP system, mail is source
   routed by the sending user through a path of connected hosts to the
   destination.  Currently, there are databases of connection
   information (UUCP maps) and programs (pathalias) that aid in
   determining routes.  There is some use of DNS-style names by UUCP
   hosts.  EUNET is a UUCP-based network in Europe, and JUNET is a
   similar net in Japan.  These international branches of UUCP use DNS-
   style names as well.  There are many hosts that may relay mail
   between UUCP and the Internet.  One prominent gateway is
   UUNET.UU.NET.

   JANET (Joint Academic NETwork)

   JANET is the primary academic network in the United Kingdom, linking
   about 1,000 computers at about 100 universities and research
   institutes.  JANET has a domain name system similar to that of the
   Internet, but the order of the domain name parts is opposite (with
   the top-level domain on the left).  The protocols used in JANET are
   the UK "Coloured Books".  The primary gateway between JANET and the
   Internet is NSFNET-RELAY.AC.UK.

   ACSNET (Australian Computer Science Network)

   ACSNET is the principal electronic mail system for the computer
   science and academic research community in Australia, connecting
   about 300 sites.  It works similarly to UUCP.  ACSNET has a domain
   naming syntax similar to that for Internet domains.  The gateways
   between ACSNET and the Internet are MUNNARI.OZ.AU and UUNET.UU.NET.

APPENDIX B

                         <<< Mail Systems Map >>>





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RFC 1168      Intermail and Commercial Mail Relay Services     July 1990


APPENDIX C

   March 1990      sent    read    total

   Telemail        1291    768     2059
   MCI Mail        56      44      100
   Compmail        634     306     940
   NSF-Mail        370     243     613
   CGnet           171     82      253
   USDA Mail       6       1       7
   BellSouth       6       10      16
   Other           0       0       0

   Total           2534    1454    3988
   Days in Month   31
   Messages per Day        128.65


   April 1990      sent    read    total

   Telemail        1363    696     2059
   MCI Mail        40      39      79
   Compmail        771     329     1100
   CGnet           361     191     552
   USDA Mail       28      31      59
   BellSouth       98      73      17
   Other           0       0       0

   Total           2661    1361    4022
   Days in Month   30
   Messages per Day        134.07


   May 1990        sent    read    total

   Telemail        1007    561     1568
   MCI Mail        23      12      35
   Compmail        815     359     1174
   CGnet           406     210     616
   USDA Mail       12      5       17
   BellSouth       167     93      260
   Other           0       0       0

   Total           2430    1240    3670
   Days in Month   31
   Messages per Day        118.39





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RFC 1168      Intermail and Commercial Mail Relay Services     July 1990


APPENDIX D

   The Domain Name System

   The Domain Name System (DNS) provides for the translation between
   host names and addresses.   Within the Internet, this means
   translating from a name, such as "ABC.ISI.EDU", to an IP address such
   as "128.9.0.123".  The DNS is a set of protocols and databases.  The
   protocols define the syntax and semantics for a query language to ask
   questions about information located by DNS-style names. The databases
   are distributed and replicated.  There is no dependence on a single
   central server, and each part of the database is provided in at least
   two servers.

   In addition to translating names to addresses for hosts that are in
   the Internet, the DNS provides for registering DNS-style names for
   other hosts reachable (via electronic mail) through gateways or mail
   relays.  The records for such name registration point to an Internet
   host (one with an IP address) that acts as a mail forwarder for the
   registered host.  For example, the Australian host "YARRA.OZ.AU" is
   registered in the DNS with a pointer to the mail relay
   "UUNET.UU.NET".  This gives electronic mail users a uniform mail
   addressing syntax and avoids making them aware of the underlying
   network boundaries.



























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RFC 1168      Intermail and Commercial Mail Relay Services     July 1990


SECURITY CONSIDERATIONS

   Security issues are not discussed in this memo.

AUTHORS' ADDRESSES

   Ann Westine
   USC/Information Sciences Instutite
   4676 Admiralty Way
   Marina del Rey, CA  90292-6695

   Phone:  [phone]
   EMail:  [e-mail]

   Annette DeSchon
   USC/Information Sciences Instutite
   4676 Admiralty Way
   Marina del Rey, CA  90292-6695

   Phone:  [phone]
   EMail:  [e-mail]

   Jon Postel
   USC/Information Sciences Instutite
   4676 Admiralty Way
   Marina del Rey, CA  90292-6695

   Phone:  [phone]
   EMail:  [e-mail]

   Craig E. Ward
   USC/Information Sciences Instutite
   4676 Admiralty Way
   Marina del Rey, CA  90292-6695

   Phone:  [phone]
   EMail:  [e-mail]














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