Ask the Expert

Spoofing e-mail messages

Can a false IP address be sent when sending e-mail? Could anybody do this and pose as someone else? Is this task easily acomplished? I have been receiving mail with my own computer's IP address.

    Requires Free Membership to View

The technique of supplying a false IP address is called "spoofing" in general, and is easy to accomplish for all kinds of traffic. E-mail messages in particular are easy to spoof because message headers can be constructed manually, and built to include any information the builder desires. This explains how some spam shows up not only addressed to you, but also apparently from you. You can block this kind of thing easily in a lot of e-mail packages such as Outlook or Eudora by blocking e-mail from yourself (but that means you'll need another internal mechanism to save your sent messages, so you can keep a record of legitimate e-mails that you do send).


This was first published in November 2001

There are Comments. Add yours.

TIP: Want to include a code block in your comment? Use <pre> or <code> tags around the desired text. Ex: <code>insert code</code>

REGISTER or login:

Forgot Password?
By submitting you agree to receive email from TechTarget and its partners. If you reside outside of the United States, you consent to having your personal data transferred to and processed in the United States. Privacy
Sort by: OldestNewest

Forgot Password?

No problem! Submit your e-mail address below. We'll send you an email containing your password.

Your password has been sent to: