[SURBL-Discuss] Nonexistent domains

Ryan Thompson ryan at sasknow.com
Sun Sep 5 06:05:20 CEST 2004

What's the deal with nonexistent domains? I've been seeing more of these
in my corpora. They don't look like typos. Are spammers making up names,
or are they registering domains and having them deleted later (either by
their choice, or the registrars'?) Should we even consider listing them,
or is poisoning not-yet-registered domains too much of a risk?

Here's an example mail. In this case, the other domain in the email,
"netdreamwatches.com", is already in many SURBLs, but
"netdreamwatches4.com" does not exist.

My thought is *not* to list the NX'ers if there's another existing
domain in the mail fit for SURBL.

Received: from by; Sat, 04 Sep 2004 21:06:45 -0500
From: "Everett Dooley" <sexdw at yahoo.com>
Reply-To: "Everett Dooley" <sexdw at yahoo.com>
To: private at email.com
Subject: Order now for free shipping on all watches!
Date: Sat, 04 Sep 2004 20:09:45 -0600
X-Mailer: AOL 9.0 for Windows US sub 022
MIME-Version: 1.0
Content-Type: text/plain;
X-Priority: 3
X-MSMail-Priority: Normal

hey there!,

Great deals on imitation rolex and etc....

go to http://www.netdreamwatches.com for more info

kind regards
Everett Dooley

get out of this sessions

- Ryan

   Ryan Thompson <ryan at sasknow.com>

   SaskNow Technologies - http://www.sasknow.com
   901-1st Avenue North - Saskatoon, SK - S7K 1Y4

         Tel: 306-664-3600   Fax: 306-244-7037   Saskatoon
   Toll-Free: 877-727-5669     (877-SASKNOW)     North America

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