On 4 Oct 2006, at 15:09, Andrew Court wrote:
> What current anti-spam rules are in place?
Greylisting and SpamAssassin. The SA spam/ham corpus is regularly
trained with manuallly-identified spam.
There is a current plague of pump'n'dump stock spam which has so far
managed to evade almost every spam filter; this is the one using an
image with text embedded in it. I see very little other spam to ILUG.
To the original poster; *many* spam engines are fully aware of the
way mailman operates, and try to subscribe to the list (or use a well-
known list administrator alias) as the From: so simply closing the
list is in general not a solution. To anyone who thinks it's an easy
problem, I'd like to reassure you that it's not. There is apparently
significant money to be made from spamming, and the spam operators
have some *extremely* clever people working for them, whose *job* it
is to craft systems to circumvent SpamAssassin, razor, greylisting
and whatnot. I don't believe that this is an arms race which can be
won by virtue of system administration excellence.
For what it's worth, the existing spam filters trap more than 1,000
spam messages per day to ILUG.
Colm
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