[maildropl] Problems with maildroprc

[Postmaster <pos...@of...>]

I am attempting to set up a maildroprc file that will scan for spam, 
mark suspected spam, and then continue with delivery as otherwise 
specified in .qmail. If there is not an indication to forward mail, then 
it should put the mail in the mailbox. This is my test file - which 
doesn't work:

import EXT
import HOST
VHOME=`/home/vpopmail/bin/vuserinfo -d $EXT@$HOST`

if ( $SIZE < 262144 )
        {
        xfilter "/usr/bin/spamc -f -u $EXT@$HOST"
        }

`grep -q "^&" $VHOME/.qmail`

if ( RETURNCODE == 0 )
        {
        exit;
        }
else
        {
        to $VHOME/Maildir
        exit
        }

What I want this to do is look for an "&" as the first charcter of the 
file; if it exists, then exit; if not deliver the mail. (I will be 
changing the grep to a program that will look to see if there are any 
non-blank lines after the "|maildrop" line; exiting 0 if there is, 1 if 
there is not.) Currently, no mail is delivered.

I based this on my original maildroprc file, which was:

import EXT
import HOST
VHOME=`/home/vpopmail/bin/vuserinfo -d $EXT@$HOST`

if ( $SIZE < 262144 )
        {
        xfilter "/usr/bin/spamc -f -u $EXT@$HOST"
        if (/^X-Spam-Flag: *YES/)
                {
                `test -d $VHOME/Maildir/.JunkMail`
                if( $RETURNCODE != 1 )
                        {
                        to $VHOME/Maildir/.JunkMail
                        exit
                        }
                else
                        {
                        to $VHOME/Maildir
                        exit
                        }
                }
        else
                {
                to $VHOME/Maildir
                exit
                }
        }
else
        {
        to $VHOME/Maildir
        exit
        }


Unfortunately, this would deliver mail to the local directory even if 
there was forwarding present. (I understand that the "to $VHOME/Maildir" 
did that; hence the changes.) I also do not use .JunkMail directory.

I have subscribed to the mailing list, but have not yet received a 
confirmation; as a result, please cc a copy of your response to me.

Thanks,

Ken