I have a couple of questions about email. I received a spam email today and it said it was sent from one of my old email addresses to the same email address that I only use to receive email. I know I didn't send anything from this account. How can they use my email address in the from line? Is this just a trick or is this something I should report? Another problem I had was about 2 weeks ago I got some undelivered email back for some hotmail addresses I never heard of, they were supposed to be sent from the same email address as the spam I got today.