Anyone else getting nailed by SPAMIS crap? I can't figure out how it's getting in. We have "Reject if Mail From = Mail To" enabled, and we have "Reject if  From Domain = To Domain". We also have SPAMIS listed in our keyword filter. I've checked all of our whitelists to make sure that nothing is enabling it to get through, and yet it still comes in.

Here's a sample of the header:
---
Microsoft Mail Internet Headers Version 2.0
Received: from trinity ([209.183.146.39]) by mail2.mtprint.com with Microsoft SMTPSVC(6.0.3790.1830);
  Wed, 14 Sep 2005 05:14:25 -0400
Received: from 202.73.166.107 by mail.mtprint.com (LogSat Software SMTP
Server) Wed, 14 Sep 2005 05:14:25 -0400
Received: from localhost.localdomain (HELO localhost.localdomain
[127.0.0.1])
 by snail.asheville.com (Mostfix) with ESMTP id BAD5203BFF  for <xxxxxx@mtprint.com>; Wed, 14 Sep 2005 01:06:35 +0300
Message-Id: <200309010816.06350.covet@uk2.net>
Date: Tue, 13 Sep 2005 19:00:35 -0300
From: "xxxxxx@mtprint.com" <xxxxxx@mtprint.com>
To: xxxxxx@mtprint.com
Subject: BREAKING NEWS: Microsoft Plans to Outsource Over 10,000 Jobs to China
MIME-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
X-Mailman-Version: 2.0.13
X-Mailer: Ximian Evolution 1.4.3
X-Server: LogSat Software SMTP Server
X-SF-RX-Return-Path: <xxxxxx@mtprint.com>
X-SF-HELO-Domain: 209.183.146.39
Return-Path: xxxxxx@mtprint.com
X-OriginalArrivalTime: 14 Sep 2005 09:14:25.0420 (UTC) FILETIME=[B39EC4C0:01C5B90C]

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I've redacted the emailed addy's, but everything with an xxxxx was exactly the same address. Help?

- Al