How do I reveal the FULL HEADER of an email message?

To determine whether a sender’s email address is real or spoofed, you need to look up the IP address in the full header.

Please follow the steps below to reveal the full header (steps for more platforms can be found at

For Outlook

  1. Open the email and click the File tab.

    header 01

  2. Under the Info tab, click Properties.

    header 02

    Header information appears in the Internet headers box.

    header 03

For Staff Email (HKUCC1 running on Microsoft Exchange):

  1. Open the email message and click  (More actions button) View message details.

    header 04

For HKU Connect Email:

  1. Log in your HKU Connect account.
  2. Open the message you would like to view the header.
  3. Click the downward arrow next to Reply at the top of the message pane.
  4. Select Show Original.

The full header will appear in a new window.

For Graduate Email (running on

Please refer to the instructions at here.

If you do not know how to interpret the full header information, you can send it to