I suspect that an intruder may be using my node to send e-mail, because I have received some notices from my e-mail daemon that such and such was not available when I never sent e-mail to that person/address.
How do I check if someone is logged in/using my machine? I'm running FC3.
Please post the full headers of one of these notices. It's possible that you're just getting backscatter due to a virus somewhere else forging your address as the sender.
Paul.
