Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!uunet!nuchat!sugar!ficc!peter
From: peter@ficc.ferranti.com (Peter da Silva)
Newsgroups: comp.mail.uucp
Subject: Re: Using SMTP and smail
Message-ID: <YO:58A4@xds13.ferranti.com>
Date: 24 Sep 90 16:55:22 GMT
References: <1808@utoday.UUCP> <1588@chinacat.Unicom.COM>
Reply-To: peter@ficc.ferranti.com (Peter da Silva)
Organization: Xenix Support, FICC
Lines: 69

In article <1588@chinacat.Unicom.COM> chip@chinacat.Unicom.COM (Chip Rosenthal) writes:
> The problem is that smail 2.5 does not have any delivery support - it
> needs to pass of the message to another program to perform the actual
> delivery.  I guess a second problem is that smail 2.5 makes the naive
> assumption that there are only two delivery channels:  uucp and local.

The best solution to this problem is to tell smail that the uucp
delivery agent is some program you specify (I stick mine in
/usr/lib/smail/router), and have it figure out the actual juju to
do the real delivery.

/*
**  Defs.h:  header file for rmail/smail.
...
*/

#define ROUTER "/usr/lib/smail/router" /* Command to route !oid mail */
#define DELIVER "/usr/lib/smail/deliver" /* Command to deliver local mail */

...

#define RMAIL(flags,from,sys) "%s %s %s %s",ROUTER,flags,from,sys /* */

#define RARG(user)		" '%s'",user

Router itself can be a simple shell script or a quicky C program. I have
it read /usr/lib/smail/routes to get the name of the program to use for
actual delivery. I default to UUCP, and I've set up several "pseudo"
sites, such as the following script that send to all members of a group:

#!/bin/sh
#
# Arguments passed in the environment: FLAGS, FROM, SYS, USERS
REAL_USERS=
BAD_GROUPS=
G_FMT="group:passwd:gid:users"
G=/etc/group

for USER in $USERS
do
  _USERS="`carve $G_FMT group==$USER users -f $G | sed 's/,/ /g'`"
  if [ ! "$_USERS" ]
  then
    BAD_GROUPS="$BAD_GROUPS $USER"
  else
    REAL_USERS="$REAL_USERS $_USERS"
  fi
done

if [ ! "$REAL_USERS" ]
then
  {
    echo "Your mail to $USERS was not sent. No valid groups were found."
    echo ""
    echo "Contents of bounced mail:"
    echo "=========="
    cat
  } | mail -s "No such group(s): $BAD_GROUPS" $FROM
  exit 0
fi

if [ "$BAD_GROUPS" ]
then
  {
    echo "Your mail to $USERS did not get to all the listed groups"
  } | mail -s "No such group(s): $BAD_GROUPS" $FROM
fi

smail -F $FROM $REAL_USERS
-- 
Peter da Silva.   `-_-'
+1 713 274 5180.   'U`
peter@ferranti.com