spam notification in my mailbox

[William Payne]

I just opened the message below.  At a loss as to what to do...  It came from '
munanoor@omantel.net.om' and had a 40 kb attachment which I did not open.
Bill

Dear user blissosaka@mac.com,

Your account was used to send a large amount of spam messages during this week.
We suspect that your computer had been infected and now contains a hidden proxy server.

We recommend that you follow our instruction in the attached text file in order to keep your computer safe.

Sincerely yours,
mac.com support team.

[Jimmie]

You don't have to do anything. Just delete it. It's not from Apple and your account almost certainly was not used to send spam (though your _address_ might have been spoofed on spam sent from bot-infested Winwonk computers. It's just a ruse to try to get you to open the attachment which, in all likelihood would do nothing if you're using a Mac.

Happy surfing. 

Jimmie