p0f not working with MTA filter

It appears the the p0f checking is only pulling the IP address of the
last MTA to touch the message. In my case 127.0.0.1 as I am using an
MTA filter in front of Postfix.

Is there an easy way to get amavisd-new to skip to subsequent host if
it gets is localhost?

Sample message header - MTA filter (MessageWall recieves message from
external host, passes to Postfix on 127.0.0.1, then LMTP to
amavisd-new, then back to Postfix for final destination...).
Amavisd-new's p0f check is querying 127.0.0.1 instead of the
123.123.123.123 IP.
....
Received: from localhost (localhost.localdomain [127.0.0.1])
by mx8.domain.us (Postfix) with ESMTP id B93DDD58B7D
for <brian@domain.com>; Fri, 14 Apr 2006 21:16:38 -0700 (PDT)
X-Virus-Scanned: amavisd-new at domain.us
Received: from mx8.domain.us ([127.0.0.1])
by localhost (domain.com [127.0.0.1]) (amavisd-new, port 10024)
with LMTP id gG0kBzQ9y24B for <brian@domain.com>;
Fri, 14 Apr 2006 21:16:38 -0700 (PDT)
Received: from mx8.domain.us (localhost.localdomain [127.0.0.1])
by mx8.domain.us (Postfix) with ESMTP id 60ACFD58B7C
for <brian@crumrine.net>; Fri, 14 Apr 2006 21:16:38 -0700 (PDT)
X-MessageWall-Score: 0 (mx8.domain.us)
Received: from [123.123.123.123] by mx8.domain.us (MessageWall 1.0.8)
with SMTP; 15 Apr 2006 04:16:38 -0000
Received: from domain.net ([127.0.0.9]) by domain.com for
<brian@domain.net>; Fri, 14 Apr 2006 21:15:17 -0700
Message-Id: <1145074517.26548@domain.net>

Sample of the debug from amavisd-new:
Apr 14 21:15:26 southbay amavis[1556]: (01556-01-40) Fingerprint
collect: max_wait=0.000, 127.0.0.1 QzrH+8hVX6fS \r\n... =>
Apr 14 21:15:28 southbay amavis[1557]: (01557-01-5) Fingerprint
collect: max_wait=0.000, 127.0.0.1 hNT+t9KWKK1S \r\n... =>
Apr 14 21:15:28 southbay amavis[1557]: (01557-01-6) Fingerprint
collect: max_wait=0.000, 127.0.0.1 ucxyDkYx3uqp \r\n... =>
Apr 14 21:15:31 southbay amavis[1561]: (01561-01) Fingerprint collect:
max_wait=0.000, 127.0.0.1 zQfv9Aa6Ldw4 \r\n... =>
Apr 14 21:15:32 southbay amavis[1557]: (01557-01-7) Fingerprint
collect: max_wait=0.000, 127.0.0.1 5b+PEBn5ZT9x \r\n... =>