On Wed, 8 Mar 2000, Josip Rodin wrote: > > > One possible technique we could employ is to require that the list > > > address appear visibly in the headers (to: or cc:). This would > > > prevent Bcc'ing the lists which is a shame (and care would need to be > > > taken with -private, which is also security), but it might be worth > > > it.
As an additional requirement, you could limit the possible number of "To:" addresses to 10. This way, a spammer needs to send out different messages, so he/she/it has to send multiple messages over his personal dialup connection. I'm using these rules on my lists here, and I've never had any spam on them, even if the submission addresses are publicized on the web. Simon PGP public key available from http://phobos.fs.tum.de/pgp/Simon.Richter.asc Fingerprint: 10 62 F6 F5 C0 5D 9E D8 47 05 1B 8A 22 E5 4E C1 Hi! I'm a .signature virus! Copy me into your ~/.signature to help me spread!
