Postfix with RAV and Spamassassing...AGAIN !

Hi, i've found a discussion on
http://msgs.securepoint.com/cgi-bin/...x0304/774.html
about interaction with Postfix, RAV and SpamAssassin.

I've created filter.sh:
#!/bin/sh
/usr/bin/spamc | /usr/sbin/sendmail -i "$@"
exit $?

and my master.cf as follow:

# ================================================== ========================
smtp inet n - n - - smtpd -o
content_filter=spamfilter:
pickup fifo n - n 60 1 pickup -o
content_filter=spamfilter:
cleanup unix n - n - 0 cleanup
....
spamfilter unix - n n - - pipe
user=spamfilter argv=/usr/bin/filter.sh ${sender} -- ${recipient}

thet i've started postfix and this is what i get on syslog:

Jul 30 15:34:34 web1 postfix/qmgr[23236]: DE6FA43C15:
to=<--@web1.chiantinet.it>, orig_to=<-->, relay=none, delay=87,
status=bounced (invalid recipient syntax: "--@web1.chiantinet.it")

What's wrong ? Thanks !

Oz
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