RE: [Full-Disclosure] Re: [Mailman-Developers] mailman emailharvester

From: Aditya Deshmukh (aditya.deshmukh_at_online.gateway.expertworks.net)
Date: 02/13/05

  • Next message: Loptr Chaote: "Re: [Full-Disclosure] Credit Card data disclosure in CitrusDB" 
    To: <Valdis.Kletnieks@vt.edu>, "'Bernhard Kuemel'" <bernhard@bksys.at>
Date: Sun, 13 Feb 2005 15:31:53 +0530

    >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....

    Hashcash and other systems that rely on some sort of check summing is going
    to cause problems and hence their adoption is always going to be under a
    cloud !

    For me the best possible thing to do is to put up a openbsd server with
    postfix / clam av / spam assassin / amavaris combo

    1. postfix will reject 90% of the spam during the initial handshake stage -
    by using a variety of dns / mx resolution tricks
    2. clamav and spam assassin integrate into postfix so that you don't have to
    accept the spam the server can even issue a 550 in the middle of the data
    stage
    3. using some known blacklists like spamhaus and rbl will cut down spam to
    99.9 %

    With a combo of all this : no spam - we do not have to worry about our
    address being leaked.

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