RE: email address "spoofed"

["Panagiotis" <pfotoglou () btech-world com>]

Hi Tim,

you are not mentioning if the IP refered to the email really belong to your
mail server

In case the IP 68.55.1.207 doesn't belong to your mail server (whish I
assume this is the case):

A)Propably he is using a Fake SMTP mailer (like FakeMail.exe).
B)Track down the IP mentioned at the email and call his ISP.

Cheers,

Panagiotis
MCP


-----Original Message-----
From: Tim Laureska [mailto:hometeam () goeaston net]
Sent: Friday, March 05, 2004 11:59 AM
To: security-basics
Subject: email address "spoofed"



I'm not sure if "spoofing" is the correct term but here is what has
happened:

Someone is sending out email messages (with virus laden attachments)
using our domain name  ... they are addressed as coming from
support () ourdomainname com (ourdomainame would be our actual domain name)
which is an email address that we never set up.

My question is how is this done and is there anything we can do to
prevent this in the future?  The message header looks like this:

Received: from your-xhtr8hvc4p [68.55.1.207] by ourdomainname.com
  (SMTPD32-8.05) id A3C8DF0118; Fri, 05 Mar 2004 04:09:28 -0500
Date: Fri, 05 Mar 2004 04:07:07 -0500
To: info () ourdomainname com
Subject: E-mail account security warning.
From: support () ourdomainname com
Message-ID: <oruybbfoofisdsegtve () ourdomainname com>
MIME-Version: 1.0
Content-Type: multipart/mixed;
        boundary="--------hggfurquvkrsejwodibt"
X-RCPT-TO: <info () ourdomainname com>
Status: U
X-UIDL: 355598192


Tim




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any course! All of our class sizes are guaranteed to be 10 students or less 
to facilitate one-on-one interaction with one of our expert instructors. 
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of an Ethical Hacker to better assess the security of your organization. 
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