Re: Antispam

[Richard Dawe]

Hello.

Hans Aberg wrote:
> ArXiv-et <http://arxiv.org> uses for antispam that the "Subject:" field has
> to contain certain keywords (GMP might use "GMP"). If not, the sender
> receives an automated reply with instructions. This seems to be a simple
> and reliable system, which does not require a moderator to stand by.

This has the same problem as challenge-response systems: What happens if the
sender is spoofed? Answer: Someone else gets spammed with the instructions. So
you get rid of the spam problem on bug-gmp, but you distribute across all the
people whose e-mail addresses have been spoofed. When there's another outbreak
of Sobig (or similar), this will annoy a lot of people.

Which anti-spam software do they use?

Regards,

-- 
Richard Dawe [ http://www.phekda.freeserve.co.uk/richdawe/ ]

"You can't evaluate a man by logic alone." -- McCoy, "I, Mudd", Star Trek