Viewing Header Information in Outlook 2003/2007 in Windows XP/Vista
Time to Complete (in minutes):  2

Question:
How do I view details of where an e-mail message came from in Outlook 2003/2007 for Windows XP/Vista?
Answer:

The header information of an e-mail message details the path a message takes to get from one computer to another. To view this information:
  1. Start Outlook.
  2. From the Go menu, select Mail.
  3. Right-click the e-mail message for which you want to view the headers.
  4. View the e-mail message's options:
    • In Outlook 2003: From the drop-down list, select Options....
    • In Outlook 2007: From the drop-down list, select Message Options....
  5. To the right of Internet Headers:, the header information will be listed.