One of the great joys of running your own server is dealing with spam and spam-related issues. Among the ads for potent products and invites from lonely people, you might find bounceback messages that appear to originate from your own email address but are clearly not from you. This is called email spoofing and it is something that every blogger or website owner should care about and take action against.
E-mail spoofing is a term used to describe fraudulent email activity in which the sender address and other parts of the email header are altered to appear as though the email originated from a different source. E-mail spoofing is a technique commonly used for spam e-mail and phishing to hide the origin of an e-mail message. By changing certain properties of the e-mail, such as the From, Return-Path and Reply-To fields (which can be found in the message header), ill-intentioned users can make the e-mail appear to be from someone other than the actual sender. It is often associated with website spoofing which mimics an actual, well-known website but are run by another party either with fraudulent intentions or as a means of criticism of the organization’s activities. The result is that, although the e-mail appears to come from the email indicated in the “From” field (found in the email headers) it actually comes from another e-mail address, probably the same one indicated in the “Reply To” field; if the initial e-mail is replied to, the delivery will be sent to the “Reply To” e-mail, that is, to the spammer’s email.
Quite a mouthful there… To simplify, email spoofing is the fancy name for bogus email messages that look like they came from you.
Interested in fixing the problem?