• Linked Applications

In email messages, headers contain the addresses of all the computer systems that have relayed a message in between the sender and you. Each computer that forwards the message along its route adds a line of information to the headers. Usually you do not see the full headers, as they can be fairly long and so are not displayed along with the common "From:", "To:", "Subject:", and "Date:" headers. The information provided in the full headers allows you to determine where a message actually came from, and how it got to your computer. This is sometimes necessary because the address you see on the "From:" line can be spoofed, or faked.

Usually this information is important to determine/block spam/phish emails being seen on the network. You can help by sending this information to itsecurity@listserv.syr.edu. The information can be forwarded in following ways:-



If you suspect a message to be phishing/spam, please attach it as "Outlook Item" to a mail (as shown in Step 1,2,3 below):

  1. Outlook Item Step 1
  2. Outlook Item Step 2
  3. Outlook Item Step 3



  1. First display the headers (see instructions for commonly used mail clients below), and then copy and paste them into an email message. For help, please contact us at ITSECURITY@listserv.syr.edu.

On this page:

  • Outlook 2010
  • Outlook 2007
  • OWA
  • Outlook 2003
  • Outlook Express, Windows Mail, Windows Live Mail (Windows)
  • Outlook 2011 (Mac OS X)
  • Thunderbird 3.x (Windows, Mac OS X)
  • Mail (Mac OS X)

  • Outlook 2010 (Windows): Double-click the message to open it in a new window. Select the File tab, and then click Properties. Then copy all information in "Internet headers:" field.

  • Outlook 2007 (Windows): Double-click the message to open it, and then in the Options group, click the dialog box launcher (small square with an arrow).

  • Outlook Web App (OWA): Double-click the message to open it, and then click the Message Details icon (an envelope with a small document over it).

  • Outlook 2003 (Windows): From the View menu, select Options... . The message headers are at the bottom of the window, in a box labeled "Headers" or "Internet headers".

  • Outlook Express, Windows Mail, or Windows Live Mail (Windows): In the message index, right-click the message, and then select Properties. Click the Details tab.

  • Outlook 2011 (Mac OS X): In your Inbox (or other folder), right-click or control-click the message, and then select View Source.

  • Thunderbird 3.x (Windows, Mac OS X): Click View, select Headers, and then choose All.

  • Mail (Mac OS X): With the message selected, from the View menu, select Message, and then select either All Headers or Long Headers.


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