But doesn't sendmail bounce back a "invalid address" message for every one
that doesn't find a valid address?
I'd get their ISP involved in this, as it certainly no better than a port
scan.
> -----Original Message-----
> From: Bill Carlson [SMTP:[EMAIL PROTECTED]]
> Sent: Thursday, December 07, 2000 12:33 PM
> To: [EMAIL PROTECTED]
> Subject: Re: sendmail:What are they trying to do?
>
> On Thu, 7 Dec 2000, Michael Burger wrote:
>
> > Alphabet spam...they take a ton of combinations, and go in
> > alphabetical order.
> >
> > I've seen systems with improperly configured swap space literally
> > come to a crawl, because the mailserver winds up chewing up so much
> > memory while trying to process this crap.
> >
>
> I thought that was it, but they never actually send anything. The message
> ends up 0 bytes.
>
> I even ran sniffit to capture exactly what they were sending the mail
> server, there isn't an actual message sent. Not exactly the way to send
> SPAM.
>
> My only other thought is a DOS attack, but it's doesn't even come close.
>
> I have noticed the addresses are never repeated. I tried setting up some
> valid aliases so I would at least get a copy of the message, no dice.
>
> *shrugs*
>
> Later,
>
> Bill Carlson
> --
> Systems Programmer [EMAIL PROTECTED] | Opinions are mine,
> Virtual Hospital http://www.vh.org/ | not my employer's.
> University of Iowa Hospitals and Clinics |
>
>
>
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