... > so, in contrast to 28,800 possible messages in the day, an unencumbered > spammer could deliver between 147744 and 4060800 pieces of spam. yes, > 28,000 messages is a lot but it's one helluva lot less than 150,000. ...
I think you'll find that most spammers are not limited by the fatness of their pipe, but how many e-mail addresses they have and how many mails they can send out before their ISP shuts them down. In other words, I don't think spammers are sending between 147744 and 4060800 pieces of spam per day -- I think they're, on average, sending much, much fewer, less than 28,800 per day per spammer. Sure, the numbers can be debated (and I'm not really interested in doing so). But you will at least agree, I hope, that your hashcash solution will slow down spammers _only_ if they happen to be sending more than 28,800 per day. (Or 10,000 a day depending on computer speed, whatever). If, for example, we actually have 1,000,000 spammers sending 1,000 per day, your solution won't do _anything_, unless hash cash takes more than a minute per message to compute. And _that_ starts to become a burden for regular users. (And what about legitimate mailing lists? And autoresponders? And..) -jim _______________________________________________ Spamassassin-talk mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/spamassassin-talk