Re: Why the mail error for domains I don't host?

From: Dirk Dettmering (freebsd-ml_at_dettmering.org)
Date: 02/21/05

  • Next message: Aubrey/Jitka Jenkins: "Re: RETURNED MAIL: SEE TRANSCRIPT FOR DETAILS" 
    Date: Mon, 21 Feb 2005 09:44:01 +0100
To: freebsd-isp@freebsd.org

    Bill Vermillion wrote:
    > I won't call myself unskilled - but I have one domain that
    > in desperation I set the MX record to localhost.
    >
    > I was running about 300,000 spam messages PER DAY to that domain.
    >
    > Removing the MX record entirely cut me down to 25,000 to 50,000
    > per day - as people would send the spam to the IP of the
    > web server. [both web and MX are on that one machine for a few
    > domains].
    >
    > I know it's not supposed to be done, but I did this in
    > self-defense.
    [snip]
    > Sorry if this site is giving you problems, but I'm open to any
    > suggestions that will keep the spam away and the 127.0.0.1
    > is the only one I could come up with.

    Why don't you use one of the RFC 1918 adresses (10.X.X.X, 172.16.X.X,
    192.168.X.X, 169.254.1.X) instead of 127.0.0.1? The chance somebody is
    using the same range out of those adresses in his own network is
    relativly low.

    Best wishes

    Dirk

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