Re: bogus MX => endless loop

From: Wietse Venema (no email)
Date: Tue Sep 05 2006 - 07:45:52 EDT

  • Next message: Rene van Hoek: "Re: Data Stack Message"

    Flavien:
    > Hello,
    >
    >
    > My server just received a (spam) message that it forwarded to another
    > host. That host rejected it, so my server bounced it. However, the
    > Sender address of the message was bogus : MX for that particular
    > domain is set in DNS to "0.0.0.0". It ended up in a loop on my
    > machine !
    >
    > Aren't DNS queries results "sanitized" in postfix ? I cannot believe
    > it. Or does it result from a special configuration that I may have
    > messed up with ?

    There are lots of IP ranges that one might not want in MX lookup
    results, but different sites have different lists.

    http://www.postfix.org/postconf.5.html#check_helo_mx_access
    http://www.postfix.org/postconf.5.html#check_helo_ns_access

            Wietse


  • Next message: Rene van Hoek: "Re: Data Stack Message"





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