Below are the instructions on how to get the internet header.  Based on the request, copy the header and send it to your IT team for further analysis 

Outlook 2016 for Mac/Outlook 2011

To view the source

1.Right-click the message within your folder listing.

2.Select "View Source" from the drop-down menu. A window will open showing the header information of the selected message.

To forward a message as an attachment

1.Click HOME tab.

2.Select Message.

3.Click the "Attachment" button from within the ribbon bar to forward the message as an attachment.


1.  Right-click an email in the emails list.

2. Click View Source as the picture shows below: