[pchelpers] Re: Mountains of spam

Hi Ekhart & Eric,

Saturday, May 27, 2006, 11:38:21 AM, you wrote:

EGlnl> Homemade filters are useless against spam; they only work against and
EGlnl> with legitimate mail such as the returned mail messages. Only Bayesian
EGlnl> filtering is effective against spam.

Returned mail can usually be identified in one or both of the following ways:

1. The header contains: "Return-Path: <>"
2. The message is from "postmaster@"

These should be checked to be sure that you didn't get a return from
an email that you really did send.

Filtering can be used to identify probably-legitimate messages. My
email program filters out all of the custom email addresses that I use
(approximately 100 of them; I use a unique one for each site, but
constructed in such a way that a single filter can identify all of
them; an example is blablabla-wizard@xxxxxxxx, which can be easily
filtered by "-wizard@..."). Any custom email address that has been
compromised is filtered separately. Email from known addresses are
also pulled out and filed. The result is a number of folders which
contain no spam whatsoever, one folder which is all spam (compromised
addresses which I no longer use, or invalid addresses), and a small
number which contains email that the Bayesian filter may not have
removed all of the spam from.

-- 
Scott.



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