procmail configuration file check

Hi all !
Please, can you explain me if this procmail configuration is correct? I'm running Virtualmin GPL 4.15 on a Centos 5.11 server.
Thanks !!

LOGFILE=/var/log/procmail.log
TRAP=/etc/webmin/virtual-server/procmail-logger.pl
:0wi
VIRTUALMIN=|/etc/webmin/virtual-server/lookup-domain.pl --exitcode 73 $LOGNAME
EXITCODE=$?
:0
* ?/usr/bin/test "$EXITCODE" = "73"
/dev/null
:0
* ?/usr/bin/test "$VIRTUALMIN" != ""
{
INCLUDERC=/etc/webmin/virtual-server/procmail/$VIRTUALMIN
}
DEFAULT=/var/spool/mail/$LOGNAME
ORGMAIL=/var/spool/mail/$LOGNAME
DROPPRIVS=yes
:0
$DEFAULT
:0
* ^X-Spam-Status: Yes
/dev/null