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Re: Recent Spam
On Tue, Jan 04, 2000 at 08:24:43PM -0800
Tom Rushworth wrote:
> (1) blocking certain addresses
> (2) restricting posters to subscriber addresses (or some such)
> (3) changing the list name to temporarily dodge the spam.
(4) Do only allow RFC822 compliant messages.
I have noticed that most of these junk mails (frankly I don't know
whether it is really junk as I am not able to read chinese(?)) are not
RC822 compliant. In most cases the mail headers do contain characters
with bit 7 set - which is never allowed in the headers.
So a simple filter which looks for more than 2 or 3 bad characters in
the header lines (From, To, Subject) should be able to kick out 90%
percent of those mails. The problem does not exist for this ML only:
Nearly all the junk mail I receive is of that kind.
It should be possible to hack procmail or Majordomo to do just this;
an option for sendmail,exim,qmail,postfix would even be better.
Werner Koch at guug.de www.gnupg.org keyid 621CC013
Boycott Amazon! - http://www.gnu.org/philosophy/amazon.html