Its strange I log into my email today ( havent checked or sent mail in days ) and I see this

Content-Transfer-Encoding: quoted-printable
This message was created automatically by mail delivery software (Exim).

A message that you sent could not be delivered to one or more of its recipients.
This is a permanent error. The following address(es)

The thing is i did not send any mail to any hotmail user because i dont even know anyone who uses hotmail. Anyone know of a worm or anything that uses the address I checked around a few places but came up with nothing.