What are full Internet headers for e-mail messages and how do I get to them?
A. Headers provide a detailed log of a message’s history and make it possible to draw some conclusion about the origin of a piece of e-mail, even when other parts of the headers have been forged. “To” and “From” lines in messages are not sufficient evidence to correctly identify the source. Both lines can be easily forged by anyone. The “Received” lines found in the headers reveal valuable information regarding the true origin of the message. Although forgery of some Received lines is possible, it would be extremely difficult to forge all the Received lines; it is simply a matter of distinguishing the facts from the forgeries.
