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    SubjectRe: What the Heck? [Fwd: Returned mail: User unknown]
    Alan Cox writes:
    > [somebody]

    >> Excuse me? How the hell do you expect them to "clean up their act" when
    >> their "dialup" users are the problem? Are you gonna scan 250,000 machines
    >> to make sure they aren't running SMTP servers? Trap all port 25 traffic?
    > FreeServe in the UK have over 3 million dialup users and no spam problem.

    First of all, the "250,000" is wrong:

    As of June 26, 2000
    excess of 730,000 customers
    grows at 200% per year

    Second, dialup users don't have enough bandwidth to matter.
    Bouncing SPAM across a 42 or 24 kb/s modem link is insignificant.

    >> It's the same problem EVERY ISP has. RR is just higher profile because
    >> of the number of users. Cable/DSL are unlike traditional dialup in that
    >> you are always connected as long as the machine is on.
    > Then they need more competant admins. It isnt _hard_ to transproxy
    > outgoing smtp traffic via a spamtrapper that checks for valid
    > src/destination and headers.

    Tell me, would you like this done to you? You may assume typical
    corporate enhancements: no PGP, filter runs on Windows 2000, any
    unknown headers get stripped out, etc.

    Don't suggest something you wouldn't like done to you.

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