[exim] exim in init.d

I'd like to modify the Exim init.d file to add something equivalent to
apache graceful restart. The ide being to just reload the config files
without killing mail in progress. This is what I have now.

#!/bin/bash
#
# exim    This shell script takes care of starting and stopping exim
#
# chkconfig: 2345 80 30
# description: Exim is a Mail Transport Agent, which is the program \
#              that moves mail from one machine to another.
# processname: exim
# config: /etc/exim/exim.conf
# pidfile: /var/run/exim.pid

# Source function library.
. /etc/init.d/functions

# Source networking configuration.
. /etc/sysconfig/network

# Source exim configureation.
if [ -f /etc/sysconfig/exim ] ; then
    . /etc/sysconfig/exim
else
    DAEMON=yes
    QUEUE=1h
fi

# Check that networking is up.
[ ${NETWORKING} = "no" ] && exit 0

[ -f /usr/sbin/exim ] || exit 0

start() {
    # check ownerships
    # do this by seeing if /var/log/exim/main.log exists and is
    # owned by exim - if owned by someone else we fix it up
    if [ -f /var/log/exim/main.log ]
    then
        if [ "exim" != "`ls -l /var/log/exim/main.log | awk '{print $4}'`" ]
        then
        chown -R exim:exim /var/log/exim /var/spool/exim
        fi
    fi
        # Start daemons.
        echo -n $"Starting exim: "
        daemon /usr/sbin/exim $([ "$DAEMON" = yes ] && echo -bd) \
                              $([ -n "$QUEUE" ] && echo -q$QUEUE)
        RETVAL=$?
        echo
        [ $RETVAL = 0 ] && touch /var/lock/subsys/exim
}

stop() {
        # Stop daemons.
        echo -n $"Shutting down exim: "
        killproc exim
    RETVAL=$?
        echo
        [ $RETVAL = 0 ] && rm -f /var/lock/subsys/exim
}

restart() {
    stop
    start
}

# See how we were called.
case "$1" in
  start)
    start
    ;;
  stop)
    stop
    ;;
  restart)
    restart
    ;;
  condrestart)
     [ -f /var/lock/subsys/exim ] && restart || :
    ;;
  status)
    status exim
    ;;
  *)
    echo $"Usage: $0 {start|stop|restart|status|condrestart}"
    exit 1
esac

exit $RETVAL