Security Basics mailing list archives
Re: email address "spoofed"
From: AgfTech Lists <lists () agftech com>
Date: 08 Mar 2004 18:00:05 -0600
On Fri, 2004-03-05 at 03:59, Tim Laureska wrote:
I'm not sure if "spoofing" is the correct term but here is what has happened:
YOu may indeed call it spoofing!
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:
How - You just need your own smtp service running on your system/server and you may send out emails as anyone using some flags on the command line... For you to do - I don't think you can stop someone doing it from, as they might be spoofing their IP too or could be doing so from another country or whatever reason... SPF is coming up as an answer to spoofing atleast and you may want to look at http://spf.pobox.com This is no way out and I would await any suggestions on this list for what can we do to someone spoofing as our domain/email... Regards Aman
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 --------------------------------------------------------------------------- Ethical Hacking at the InfoSec Institute. Mention this ad and get $545 off 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. Attend a course taught by an expert instructor with years of in-the-field pen testing experience in our state of the art hacking lab. Master the skills of an Ethical Hacker to better assess the security of your organization. Visit us at: http://www.infosecinstitute.com/courses/ethical_hacking_training.html ----------------------------------------------------------------------------
______________________ Aman Raheja AGF Technologies http://www.agftech.com ______________________ --------------------------------------------------------------------------- Ethical Hacking at the InfoSec Institute. Mention this ad and get $545 off 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. Attend a course taught by an expert instructor with years of in-the-field pen testing experience in our state of the art hacking lab. Master the skills of an Ethical Hacker to better assess the security of your organization. Visit us at: http://www.infosecinstitute.com/courses/ethical_hacking_training.html ----------------------------------------------------------------------------
Current thread:
- email address "spoofed" Tim Laureska (Mar 08)
- RE: email address "spoofed" David Gillett (Mar 08)
- RE: email address "spoofed" Aditya, ALD [Aditya Lalit Deshmukh] (Mar 10)
- RE: email address "spoofed" David Gillett (Mar 11)
- RE: email address "spoofed" Aditya, ALD [Aditya Lalit Deshmukh] (Mar 15)
- RE: email address "spoofed" David Gillett (Mar 15)
- RE: email address "spoofed" Aditya, ALD [Aditya Lalit Deshmukh] (Mar 10)
- RE: email address "spoofed" David Gillett (Mar 08)
- Re: email address "spoofed" Adrian Hall (Mar 11)
- <Possible follow-ups>
- RE: email address "spoofed" Chinnery, Paul (Mar 08)
- Re: email address "spoofed" Sean Earp (Mar 08)
- Re: email address "spoofed" Webb Wang CS (Mar 08)
- RE: email address "spoofed" Jeff McLaughlin (Mar 08)
- RE: email address "spoofed" Phil Waller (Mar 08)
- RE: email address "spoofed" Fields, James (Mar 08)
- RE: email address "spoofed" Josh Mills (Mar 09)
- RE: email address "spoofed" JULIO CALDERON (Mar 12)