Re: Re: [Mailman-Developers] mailman email harvester

[Valdis.Kletnieks () vt edu]

On Sat, 12 Feb 2005 02:48:56 +0100, Bernhard Kuemel said:

> If hashcash (http://www.hashcash.org/) gets integrated in our mail
> systems we no longer need to hide or obfuscate our email addresses.

And I overlooked the most fatal flaw in hashcash:

Hashcash really sucks if you're a mail server admin who has to crank 50,000
hash cashes a day at 5 CPU seconds a pop because people forgot to whitelist
your server.

Hashcash isn't even a tiny speed bump if you're a spammer and have 50,000
zombies - each one only takes a 5 second hiccup and continues spamming....

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