Macos – View full message headers on Outlook 2011 for Mac

This is how to view the full header information in outlook 2003/2007.

1. Right click on the message in its mailbox and select Options (in 2007, it is "Message Options" at the bottom of the right click menu).
2. Right click in the Internet Headers box and choose Select All.
3. Right click again in the Internet Headers box and choose Copy.

You can scroll through and read it or you can continue to your favorite text editor and paste it into that for easier reading.

1. Open the .msg file (Double clicking it should open it in Outlook).

2. If you're using Outlook 2007, click on the small arrow at the bottom of the Options section of the ribbon. If its Outlook 2003 or below, click View->Options from the menu bar. This should bring up the Message Options window.

3. The full message headers should be present in the text box labeled "Internet headers" in this window.

Source: http://office.microsoft.com/en-us/outlook/HA010937071033.aspx