RMAIL(ADM)                           UNIX System V



     Name
          rmail - submit remote mail received via UUCP


     Syntax
          rmail user ...


     Description
          rmail interprets incoming mail received via uucp(C), passing
          the  processed  mail on to submit(ADM) for processing by the
          MMDF mail system.  rmail is explicitly designed for use with
          UUCP  and  the  MMDF submit program.  It is not intended for
          use by regular users.

          Rmail performs several  conversions  on  the  incoming  mail
          before  calling  submit.   The  conversions change addresses
          from the UUCP routing style (lists of hosts separated by the
          character  `!')   to the domain style of address used within
          the MMDF mail system.  The incoming message is dealt with in
          the following manner:

          1)   The initial ``From'' (or ``>From'') line  is  processed
               to  discover the originating site and the sender of the
               message.   Some  UUCP  mailers  do  not   supply   this
               information  as  part  of  the  message  body.   If the
               originating site cannot be found from this information,
               the  program  environment is inspected for the variable
               ``ACCTSYS''; this is set to the originating  system  by
               some  implementations  of UUCP.  The originating system
               is used as a table lookup value  into  the  mmdf  table
               ``rmail.chans,''  the file contains site/channel pairs.
               If a match is found the resulting channel is  used  for
               the  submit phase.  The default UUCP channel is used if
               no  match  is  found.   The  default  channel  name  is
               specified in conf.c source and can be runtime tailored.
               Typically  it  is  ``uucp''.   The  existence  of  this
               channel  is  MANDATORY  to  prevent  dropping mail from
               unknown hosts.

          2)   The body of the message is inspected  looking  for  any
               header   lines  containing  addresses;  the  lines  are
               ``From:'', ``To:'', ``Cc:'', ``Bcc:''  and ``Sender:''.
               By  scanning the address chains, the addresses in these
               lines  are  converted  into  ``user@known-site.domain''
               form  using  the  MMDF  tables  to evaluate whether the
               mailer knows the site.  For this to work properly,  the
               unqualified  name  of  all  sites  should  exist in the
               appropriate domain tables.  The scanning stops when  an
               unknown site is discovered and a composite address will
               be created.  The ``From:'' line is treated specially to
               preserve  any  comment  information which may have been
               inserted by the originating mailer.

          3)   The `Date:' line is also re-written into ARPA  standard
               form.

          Before submit is called,  the  message  is  re-written  into
          RFC822/733  form  with all addresses obeying the appropriate
          convention.  Any missing header  lines  are  supplied.   The
          destination  address  for  the  message  is  taken  from the
          argument to rmail , and so the header  re-writing  which  is
          done does not affect the routing of the message.


     See Also
          mail(C), uucp(C), submit(ADM)


     (printed 2/15/90)                                 RMAIL(ADM)