try these: http://www.expita.com/header1.html is a reference sheet for e-mail, smtp, headers
http://www.stopspam.org/email/headers/headers.html is a good tutorial on how to understand e-mail headers. http://spamcop.net/fom-serve/cache/16.html has a link to how to get the full header info for any e-mail program. nigel dyson-hudson "Internet since uucp, lynx and mosaic days" "I was Internet when Internet wasn't cool" [EMAIL PROTECTED] Wizards are never late, Frodo Baggins. Nor are they early. They arrive precisely when they mean to. - Gandalf On Thu, 20 Feb 2003 13:32:34 -0500, Marty wrote: >Hi group, > >Could someone explain how to decipher Email header? How can we know >the real sender of spam or virus email? > >Thanks, > >Marty