This seems really silly, but I end up forgetting how to do this, and then I have to go poking around for a good while before I find it again.

This trick is handy if you want to see how a piece of email came to you, the exact servers that did the sending and receiving, along with their IP addresses, and what address it was sent to.

To get all of this great information, you just have to read through the Internet headers of the message. To do this in Microsoft Outlook 2007:

1. Double click the message so that it opens in its own window.

2. Then, in the toolbar ribbon, click the little arrow on the bottom right of the options section. You can see its location in the picture below.

3. Once you click the arrow, you will be greeted with the "Message Options" dialog. There is a section near the bottom of the window titled "Internet Headers". The section is highlighted in Red in the picture below.