nanog mailing list archives

Re: SMTP in distributed DOS


From: I Am Not An Isp <patrick () ianai net>
Date: Sun, 20 Feb 2000 13:28:27 -0800


At 04:07 PM 2/20/00 -0500, Valdis.Kletnieks () vt edu wrote:

>Correct.  But the person said we *should* bounce back to the originating IP
>address, which is what's logged in the Received: header.  My point was that
>if we *did* what he suggested, *his* mail would quite possibly be broken
>by taking the action.  I've seen a number of mail packages (PP from the
>ISODE comes to mind, but there's others) that refused to accept mail if
>they couldn't verify at message submission time that they'd be able to send
>back a bounce message.  I'm not saying that's correct EITHER, just that
>there's sites that do that.

Sorry, guess I misread the original post.

I thought he was just sending it to a random hostname in the received headers, not in the from field.

Oh, well, just goes to show you cannot trust someone without enable! :)


>                            Valdis Kletnieks

TTFN,
patrick

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