RE: [Full-Disclosure] Block notification / bounce mails (as in DDOS)

From: Richard Gadsden (
Date: 04/02/04

  • Next message: Jos Osborne: "RE: [Full-Disclosure] Block notification / bounce mails (as in DDOS)"
    To: <>
    Date: Fri, 2 Apr 2004 14:55:44 +0100

    Security <> wrote on Thursday, 1 April 2004 3:06 p.m.:

    > <question>
    > What would you do when a spammer uses your mail-address as the
    > "From:" and the mails that are sent by the spammer get all bounced
    > back by legitimated mail-servers to your mailhandlers? All the
    > bounces would return to you - as you are the 'from' (assume a rate of
    > 1.000 a minute) and this traffic would kill your network-connection.
    > You wouldn't be able to receive any mail because your mailserver can
    > no longer handle the load </question>

    If you can manage this, start breaking an RFC and throw out anything with
    a MAIL FROM:<>

    That should get rid of the bounces but not the annoyed replies from hostile users.
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  • Next message: Jos Osborne: "RE: [Full-Disclosure] Block notification / bounce mails (as in DDOS)"