SPAMBouncer problem -- no BOUNCE for SPAMREPLY

[http://dummy.us.eu.org/robert (robert)]

Hi.  I'm still using the SPAMBouncer...

So, I set SPAMREPLY to "BOTH".  It indeed seems to send messages to the
postmasters upstream, but I don't think it's sending the fake bounce.  I set
"VERBOSE=on" before the

 :0 c: spamtemp.lock
 | (${FORMAIL} -rt \
    -I"From: MAILER-DAEMON@$ALTHOST (Mail Delivery Subsystem)" \
    -I"Subject: Returned mail: User unknown" \
    -I"Auto-Submitted: auto-generated (failure)" \
    . . .

But it doesn't indicate that it's executing that piece of code.  The mail
server is running procmail v3.10; also QMAIL 1.03; on Linux 2.0.34.

Any ideas?