Hi,
SomeFool is another name for Netsky, which avast detects for ages
Mail-worms usually “Spoof”/Forge/fake sender adresses.
- somewhere in the infinite reaches of the universe/internet, a PC is infected with netsky AND has your Emil-adress saved somewhere.
The Worm then sends out itself with fake sender-adress; a Mailserver-Scanner then wrongly interprets this virus-mail as coming from you, and sends you the above (inappropriate and useless) reply
what does a full scan with updated AV-Scanner say ?
if it says your PC is clean, it most probably is

Read the virusinfos (see below) on netsky
For the future:
apply all Windowsupdates, and configure your Mail-Program and Web-Browser more securely (see board-search above)
