Re: [camram-spam] Re: Microsoft publicly announces Penny Black PoW postage project

2003-12-30 Thread Alan Brown
On Tue, 30 Dec 2003, Eric S. Johansson wrote: > But using your spam size, , the slowdown factor becomes roughly > 73 times. So they would need 73 machines running full tilt all the time > to regain their old throughput. Believe me, the professionals have enough 0wned machines that this is trivi

Re: [camram-spam] Re: Microsoft publicly announces Penny Black PoW postage project

2004-01-02 Thread Alan Brown
On Tue, 30 Dec 2003, Bill Stewart wrote: > The reason it's partly a cryptographic problem is forgeries. > Once everybody starts whitelisting, spammers are going to > start forging headers to pretend to come from big mailing lists > and popular machines and authors, so now you'll not only > need to