Hi, I received a weird message today. It came from email@example.com Here it goes: This is an automatically generated Delivery Status Notification. Delivery to the following recipients failed. *one of my hotmail contact* From: *my hotmail adress* To: *a few of my contacts* Subject: Date: Fri, 7 Oct 2011 16:12:40 -0400 *spam link* It came with a weird linked file. Now I've heard about spoofing, but the fact that there are my contacts' adresses on the message worries me a bit. This is the first and only time I've ever received such a message, and nothing has led me to believe that I would unknowingly send spam before. I changed my hotmail password just to be sure. I use leopard. What is my problem? Thanks Edit: Important detail: there's nothing wrong in my outbook. If this is the work of a hacker, he is very concious about not leaving any trace of his mischiefs.