E-mail virus/spam/probes


#1

I keep getting e-mails trying to find a recipient at my domain without success, and then getting return messages such as:

The original message was received at Mon, 19 Sep 2005 20:56:46 -0700 (PDT)
from cpe-72-129-71-176.socal.res.rr.com [72.129.71.176]

----- The following addresses had permanent fatal errors -----
system@deweywriter.com
(reason: 550 system@deweywriter.com: Recipient address rejected: User unknown.)

----- Transcript of session follows -----
… while talking to fltr-in1.mail.dreamhost.com.:

[/quote]

<<< 550 system@deweywriter.com: Recipient address rejected: User unknown.
550 5.1.1 system@deweywriter.com… User unknown
<<< 554 Error: no valid recipients

Reporting-MTA: dns; ms-smtp-01-eri0.socal.rr.com
Received-From-MTA: DNS; cpe-72-129-71-176.socal.res.rr.com
Arrival-Date: Mon, 19 Sep 2005 20:56:46 -0700 (PDT)

Final-Recipient: RFC822; system@deweywriter.com
Action: failed
Status: 5.1.1
Remote-MTA: DNS; fltr-in1.mail.dreamhost.com
Diagnostic-Code: SMTP; 550 system@deweywriter.com: Recipient address rejected: User unknown.
Last-Attempt-Date: Mon, 19 Sep 2005 20:56:50 -0700 (PDT)

Received: from deweywriter.com (cpe-72-129-71-176.socal.res.rr.com [72.129.71.176])
by ms-smtp-01-eri0.socal.rr.com (8.12.10/8.12.7) with ESMTP id j8K3ukFf001147
for system@deweywriter.com; Mon, 19 Sep 2005 20:56:46 -0700 (PDT)
Message-Id: 200509200356.j8K3ukFf001147@ms-smtp-01-eri0.socal.rr.com
From: admin@deweywriter.com
To: system@deweywriter.com
Subject: You have successfully updated your password
Date: Mon, 19 Sep 2005 20:56:31 -0700
MIME-Version: 1.0
Content-Type: multipart/mixed;
boundary="----=_NextPart_000_0010_55EB50FA.CEABAD02"
X-Priority: 3
X-MSMail-Priority: Normal
X-Virus-Scanned: Symantec AntiVirus Scan Engine
X-Virus-Scan-Result: Repaired 36064 W32.Mytob.EV@mm

This has been happening for a week and all coming from the same IP address.

Is there any way to deny these e-mails?