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#!/bin/sh
#$Id: subscreen,v 1.2 1994/08/18 13:44:37 berg Exp $
# $1 contains the mail address of the prospective subscriber
# We return zero if subscription is allowed, and one if not.
case "$1" in
*@hostile.our.local.domain) exit 1 ;; # Not this one
*@*our.local.domain) exit 0 ;; # This one is ok
*@some.other.domain) exit 0 ;; # Ditto
esac
exit 1 # reject everything else
# Instead of ending with 'exit 1', you could also use something
# like:
echo "From $1" | multigram -l24576 -b1 allowsub >/dev/null
# This will reject any mail address is not remotely like any of the
# addresses mentioned in 'allowsub'
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