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Subject: Re: false positives
From: J C Lawrence <claw @ kanga . nu>
Date: Wed, 26 Feb 2003 11:34:12 -0800
To: "Angel Rivera" <angel @ wolf . com>
Cc: list-managers @ greatcircle . com
In-reply-to: Message from "Angel Rivera" <angel @ wolf . com> of "Wed, 26 Feb 2003 11:33:00 GMT." <20030226113300 . 21046 . qmail @ houston . wolf . com>
References: <tneff @ grassyhill . net> <130798312 . 1046214147 @ [192 . 168 . 254 . 79]> <3E5BF111 . 13482 . A908AAE @ localhost> <1399 . 1046242169 @ kanga . nu> <20030226113300 . 21046 . qmail @ houston . wolf . com>

On Wed, 26 Feb 2003 11:33:00 GMT 
Angel Rivera <angel @
 wolf .
 com> wrote:
> J C Lawrence writes:

>> Which are precisely the reasons I don't and won't do SPAM filtering
>> at the MTA.  The potential cost of error is high, and almost all
>> ability to supervise and correct is lost.

> A lot of these problems are probably due to misconfigured tools.

Accepted, partially.  Various RBLs have a tendency to mark associated
netblocks, which I find deceptive.

> I am a firm believer of RBLs and we use that as the first line of
> defense against spam. If it has come to the point where someone is on
> one of the RBLs we use-we need a break.

> To that we have added SpamAssassin in tagging mode.  The few false
> positives that it catches are simply tagged and can be whitelisted.

I use RBLs, SpamAssasin, Razor, TMDA and a few privately developed
filters in concert at LDA time to assist in correct folder filing.

-- 
J C Lawrence                
---------(*)                Satan, oscillate my metallic sonatas. 
claw @
 kanga .
 nu               He lived as a devil, eh?		  
http://www.kanga.nu/~claw/  Evil is a name of a foeman, as I live.


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