[Mimedefang] Rejecting spam - users unsubscribed from distribution lists

[Ingeborg Hellemo]

brennan at columbia.edu said:
> I feel very strongly that nothing should be dropped.  False positive is
> always a possibility however small. 

jim at info.uah.edu said:
>    I usually just whitelist the mailing list sender in SpamAssassin. 


Thank you for your feedback!

After alking with my fellow postmasters at the other Universities in Norway, I 
think I end up with rejecting spam like I do today, but silently dropping spam 
from adresses that look like mailinglists. Something like this (need to add 
regexp for VERP):

action_bounce("Spam-score ($hits) too high") unless ($Sender =~ 
/^(.*-request\@|owner-.*\@|.*-owner\@)/);

Maintaining yet another whitelist with addresses to offending list-servers 
will not work. When users are unsubscribed it is already too late.


--Ingeborg
-- 
Ingeborg Østrem Hellemo  --  ingeborg at cc.uit.no  (Univ. of Tromsø, Norway)