How to bypass spam filtering for system generated messages

I am wondering how people handle system messages and how
best to keep them 
from being spam filtered and possibly designated as spam. 
Here are the full 
headers from one of my LogWatch messages that got designated
as spam:
==========
Return-Path: <rootexample.com>
X-Original-To: someoneexample.com
Delivered-To: someoneexample.com
X-Virus-Scanned: by amavisd-new at mail.example.com
X-Spam-Flag: YES
X-Spam-Score: 11.781
X-Spam-Status: Yes, score=11.781 required=10
tests=[AWL=-12.425,
    BAYES_00=-2.599, BODY_FREE_TRIAL=2.522,
BODY_GAPPY_TEXT=1.922,
    BODY_PREAPPROVED=1.811, BODY_ROLEX=3.111,
CHICKENPOX_64=0.5,
    CHICKENPOX_82=0.5, LONGWORDS_15=1, LW_FAKEROLEX=5,
LW_ROLEX=1,
    LW_ROLEXWATCH=1, NO_RELAYS=-0.001, REPLICA_WATCH=2.9,
ROLEX_BODY=0.5,
    SARE_SPEC_REPLICA_OBFU=1.812,
SARE_SPEC_ROLEX_NOV5A=1.062,
    SARE_SPEC_ROLEX_REP=1.666, UOLCC_ROLEX_BODY1=0.5]
To: rootexample.com
Subject: LogWatch for mail.example.com
Message-Id: <20060922101734.B69E63A29Email.example.com>
Date: Fri, 22 Sep 2006 03:17:34 -0700 (PDT)
From: rootexample.com (root)
==========

Is there a way to direct these system messages so that they
bypass spam 
filtering?

Bill 


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