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From: Andrew McNamara (andrewmconnect.com.au)
Date: Mon Jun 04 2001 - 23:19:15 CDT

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    >I'm told this is a "spammer trick." What I'm wondering is: is it? For
    >example, the log shows:
    [...]
    >and the next thing you know, the same email tries to sneak in via a
    >backup MX. (Thank God [and Wietse] for header_checks :-).)

    We see a lot of spam engines that skip trying the primary MX
    altogether, hitting only the secondaries for a given domain.

     ---
    Andrew McNamara (System Architect)

    connect.com.au Pty Ltd
    Lvl 3, 213 Miller St, North Sydney, NSW 2060, Australia
    Phone: +61 2 9409 2117, Fax: +61 2 9409 2111

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