[Zope3-checkins] Spam filtering on this checkins list

[Ken Manheimer]

I'm conducting a trial of a simple spam filtering scheme on a few of the 
checkins lists.  Here's what i posted to zope-checkins - i'm impatient to 
see it work, or not, so am expanding the measures to include 
zope3-checkins.

According to a bit of empirical computer science (is there really any 
other kind?-), it looks like we're in a good situation for filtering spam 
on our zope.org checkins and collector lists!  According to my tests, we 
can use a combination of the header-filter rules and non-subscriber 
rejection to admit all checkin notices *and* subscriber postings, and 
automatically reject any non-subscriber postings.

I've established that this works on a test list and checkin repository of 
my own, and am trying it out on this larger list to see if it generalizes 
as i expect.  I've set the action to "hold" for items that don't pass 
muster, so we won't lose any valid traffic if i'm mistaken.  Bear with me 
if you get unexpected hold notices on checkins or followups.

If it turns out that it does behave as i expect, i'll post a message to 
zope-announce detailing the settings, so other checkin and collector lists 
admins can institute it on their lists.

Ken
klm at zope.com