On Tue, Sep 19, 2006 at 08:41:39PM +0100, John Kelly wrote: > On Tue, 19 Sep 2006 16:19:25 -0400, "Roberto C. Sanchez" > <roberto@connexer.com> wrote: > > >> Why is someone sending random text to the list? > > >It is an effort to screw up spam filters that people train. They > >spammers figure that if they send enough random gibberish, your spam > >filter will overlook the semi-coherent real spam. > > Content filtering is a treadmill. You sweat, but don't go anywhere. > > Origin filtering is better. I reject all connections lacking proper > DNS. It stops 60% + of all spam at SMTP time, and it's the basis for > other checks based on knowing a valid hostname. > I use a customized version version of this configuration: http://jimsun.linxnet.com/misc/postfix-anti-UCE.txt Whenever I get frustrated at the amount of spam reaching my inbox, I just go persuse /var/log/mail.log and marvel at the amount of crap that isn't even getting through. Regards, -Roberto -- Roberto C. Sanchez http://people.connexer.com/~roberto http://www.connexer.com
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