Re: overflowed by spam

[Lynn Winebarger]

On Wednesday 06 March 2002 15:20, Marius Vollmer wrote:
> Lynn Winebarger <address@hidden> writes:
> 
> > I know this is a general GNU mailing list problem, but is there no way 
> > to filter out some of the spam?  I was looking at the bug-guile and 
> > guile-sources archives and the signal-to-noise ratio is very low.
> 
> We are filtering the lists (based on some header regexps) but this
> doesn't seem to catch enough spam, especially on bug-guile.
> 
> I'll add the rule to discard messages with "ks_c_5601-1987" in
> Content-Type or Subject.

   You might think about filtering messages with subjects that are, say, 
80% the same character if greater than some minimum length, like
<XXXX>XXXXXXXXXXXXXXXXXXXX, and 100% all the same character for
subject lines with more than (say) 2 or 3 characters.  Or 50% one character 
and all the rest punctuation.   The probability of the utility of messages 
with subject lines like these has got to be low in any case.
    And, of course, I won't cry if I never get another spam for toner 
cartridges.  But maybe there's some legitimate messages with that subject 
line.

Lynn