Qconfirm test: problem

Hi folks,

I'm testing qconfirm for an account.
I've installed qconfirm. My system has vpopmail and some domains.
In /home/vpopmail/domains/domain1.dom/user1 I've created the .qconfirm
directory:

qconfirm-conf /home/vpopmail/domains/domain1.dom/user1/.qconfirm

Then, I've seen the qmail's file virtualdomains, and I've created the
QCONFIRM_PREPEND file in
/home/vpopmail/domains/domain1.dom/user1/.qconfirm/conf like this:

domain.dom-

I've added the first rule in my .qmail file

|qconfirm-check -d/home/vpopmail/domains/domain1.dom/user1/.qconfirm

and I've sended an email from another domain to [email protected], but
nothing. The maillog is ok, the email arrives, but I have nothing in the dir
or prepending, and no request-email.

My .qmail file is the problem, I think.
At the moment is like this:

|qconfirm-check -d/home/vpopmail/domains/domain1.dom/user1/.qconfirm
| maildrop /etc/mailfilter

Mailfilter is a script that works fine:
no-spam --> go to /Maildir/
spam --> go to [email protected]

This is my mailfilter:
SHELL="/bin/sh"
PWD=`pwd`
VMAILDIR="$PWD/Maildir/"
USERNAME=`echo ${PWD##*/}`
USERHOST=`PWDTMP=${PWD%/*}; echo ${PWDTMP##*/}`
#logfile "/home/vpopmail/domains/mailfilter.log"

log "Running mailfilter for $USERNAME@$USERHOST"
if (/^X-Spam-Status: *YES/)
{
        #try to deliver to the spam account
        exception {
                to "!abuse@$USERHOST"
        }
log "Sending to abuse@$USERHOST"
}
else
{
        #put it in the box
        exception {
                to "$VMAILDIR"
        }
log "Delivering to $VMAILDIR"
}
exit

In this case, the mailfilter policy doesn't work. Probably the problem is
the first rule in my .qmail file.

Suggestions? Where's my mistake?
Thanks for your patience and support
Regards
Andrea