[Exim] Newbie Question

This is a multi-part message in MIME format.
--
[ Picked text/plain from multipart/alternative ]


My network had been attacked by a mass mailing worm, which I have since cleaned. Being as cautious as I can be, I havent plugged back my network cable to my LAN as yet. Now my box keeps generating emails by itself, is there something I can do on Exim to stop this, or has my linux box been attacked as well.

--