






                             SprintMail X.400 Gateway


            _A_d_d_r_e_s_s:
            Merit Computer Network
            1075 Beal Ave.
            Ann Arbor, MI 48109-2112

            _E_m_a_i_l: Customer.Service@Sprint.COM

            _P_h_o_n_e: 1-800-336-0437


            _D_e_s_c_r_i_p_t_i_o_n

            The Merit staff operates a gateway between the Internet  and
            SprintMail,  which  allows  messages to be exchanged between
            SprintMail customers and Internet  users.   The  gateway  is
            connected  to  Sprintnet and to the Internet through Merit's
            connections to the NSFNET.

            SprintMail, operated by Sprint International, is  a  commer-
            cial  X.400 electronic mail network providing services to US
            customers and access  to  other  networks  domestically  and
            internationally.   Formerly  known  as  Telemail, SprintMail
            uses the Sprintnet (formerly Telenet)  public  data  network
            for its e-mail connections.

            Merit  provides  hardware  and  software   maintenance   and
            administration and network operations (via the Merit Network
            Operations Center) for the Internet gateway; Sprint provides
            Sprintnet connectivity and user consulting and registration,
            as well as gateways to other X.400 networks.

            The gateway is a Sun SPARCstation-I running Sun OS 4.0.3 and
            Sunlink  MHS.  An X.25 link to Sprintnet is connected to the
            Sun's serial port at 9600 bps.   Protocols  used  are  X.400
            Message  Handling  System,  X.225 session layer, X.224 tran-
            sport class 0, and X.25. On the Internet  side,  the  Simple
            Mail Transfer Protocol (RFC-822), Transfer Control Protocol,
            Internet Protocol, and Ethernet protocols are used.

            _________________________
            The information in this section is provided  in  accor-
            dance  with the copyright notice appearing at the front
            of this guide.




            Sept. 22, 1990              NNSC       Section 5.35,  Page 1








            The  gateway  supports  a  directory  function  that  allows
            SprintMail  customers  to be registered with a mnemonic name
            which can be used  by  Internet  users  when  sending  mail.
            SprintMail  users  who  wish  to register can contact Sprint
            Customer Service.

            Merit provides domain name service for the SPRINT.COM domain
            as  well  as  for  some  other  domains  on  behalf  of some
            SprintMail customers.  For example, the COMPMAIL.COM  domain
            is owned by the IEEE (Institute of Electrical and Electronic
            Engineering) Computer Society but is operated  by  Merit  as
            part of the gateway function.

            _N_e_t_w_o_r_k _A_c_c_e_s_s

            From the Internet to SprintMail
            To  use  the  gateway,  an  Internet  user  can  specify   a
            registered SprintMail alias name, in the form:

                 John.Doe@Sprint.COM

            Alternatively, the full X.400 Originator/Recipient (OR) name
            can be specified, (all on one line), for example:

                 /pn=John.Doe/admd=Telemail/o=Sprintintl/c=us/@Sprint.COM

            The  Internet  host  name  after  the  at-sign,  @,  can  be
            SPRINT.COM or another domain supported by the Merit gateway.
            X.400  OR  names  consist  of a list of parameters and their
            values.  X.400 parameters in OR names that can  be  used  by
            the SprintMail gateway include:


            ADMD    Administrative Management Domain
            PRMD    Private Management Domain
            PN      Personal Name
            G       Given Name
            S       Surname
            DD.UN   User Name (DD is "Domain Defined")
            O       Organization
            C       Country (two-letter abbreviations must be used, for 
                    example, US, GB, JP)


            From SprintMail to the Internet
            When sending mail from the SprintMail X.400  environment  to
            the  Internet,  the  native  syntax  of  the sender's system
            should be used.  Use an _A_D_M_D of TELEMAIL, _P_R_M_D  of  INTERNET
            and  _C_o_u_n_t_r_y  of US, along with the "RFC-822" _d_o_m_a_i_n _d_e_f_i_n_e_d



            Sept. 22, 1990              NNSC       Section 5.35,  Page 2








            attribute to specify the user's Internet mail address.   For
            example,  to  send  mail  from  the  SprintMail system to an
            Internet user whose address is jdoe@engin.college.edu,  type
            (all on one line):

                 (Site:Internet,ID:<jdoe(a)engin.college.edu>)

            The angle brackets "< >" are required.  The  "(a)"  replaces
            the  at-sign, @, because that and most other special charac-
            ters are illegal as specified in RFC  987,  which  makes  it
            necessary  to  substitute "(u)" for underscore, _, "(b)" for
            bang (exclamation point), !, "(q)" for a quotation mark,  ",
            and "(p)" for percent, %.

            Resolving Problems

            If a message sent across the gateway  cannot  be  delivered,
            the  gateway will send a return message to notify the sender
            of nondelivery.  That notification message will explain  the
            problem  with  the  mail address.  If you have further ques-
            tions, call or send e-mail to Sprint Customer Service.






























            Sept. 22, 1990              NNSC       Section 5.35,  Page 3


