full-disclosure - Funny smtp helo in the logs

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Date: Mon Oct 31 03:38:42 2005
From: kenneth.d.ng at gmail.com (Kenneth Ng)
Subject: Funny smtp helo in the logs

Well, spammers are taking advantage of the old "be liberal in what you
accept" coding motif.

On 10/30/05, Valdis.Kletnieks@...edu <Valdis.Kletnieks@...edu> wrote:
>
> On Sun, 30 Oct 2005 12:39:52 +0530, Aditya Deshmukh said:
>
> > 124 09/10/2005 09:54:35 HELO -1209283632 ---> 250 my.smtp.domain.server
>
> I'm not sure which is sadder, that the spamware is totally untested and
> buggy,
> or that so many sites will accept this syntactically invalid HELO command
> that
> the spammers weren't forced to fix their code.....
>
> And yes, it looks like somebody did an 'sprintf("HELO %d",my_ip_addr);'
> without bothering to check what that produced....
>
>
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