qpsmtpd/plugins/auth/authdeny

#!perl -Tw
#
#  This plugin doesn't actually check anything and will fail any
#  user no matter what they type.  It is strictly a proof of concept for
#  the Qpsmtpd::Auth module.  Don't run this in production!!!
#

sub hook_auth {
    my ( $self, $transaction, $method, $user, $passClear, $passHash, $ticket ) =
      @_;

    #  $DB::single = 1;

    $self->log( LOGWARN, "Cannot authenticate using authdeny" );

    return ( DECLINED, "$user is not free to abuse my relay" );
}