Every now and again, we get this question. “I am receiving spam sent by me to me! How do I stop this? I have Windows Live Mail and have checked to save all sent messages. These spam messages aren’t in the sent file.”
They aren’t in the sent file because you aren’t actually sending them. Spammers are just spoofing your e-mail address as the address where the e-mail is originating.
You may have accidentally opened something, or given your e-mail address to a site that borrowed your address for this purpose, but it’s more likely that a friend who wasn’t too careful about visiting sites or clicking on suspicious e-mails gave spammers access to his or her address book. Or she could have sent out an e-mail with multiple addresses, including yours, as the recipients. Someone who received that e-mail might have malware on his PC that used all of the addresses as a return address for spam.
There’s not much you can do to stop them from using your address. Just make sure your virus protection is up-to-date and your e-mail password is secure.