#!/bin/sh

if [ ! -f /etc/mailer.conf.pre-sendmail ]; then
    echo "can't find /etc/mailer.conf.pre-sendmail, sendmail not disabled" >&2
    exit 1
fi

if [ -f /etc/mailer.conf ]; then
    if mv -f /etc/mailer.conf /etc/mailer.conf.sendmail &&
	mv -f /etc/mailer.conf.pre-sendmail /etc/mailer.conf; then
	echo "sendmail mailer.conf disabled, old mailer.conf enabled" >&2
    else
	echo "failed to restore old mailer.conf" >&2
	exit 1
    fi
else
    echo "can't find /etc/mailer.conf, sendmail not disabled" >&2
    exit 1
fi