There's a particularly nasty worm/virus going around at the moment, and some people on the board may have received an email containing it with my return address. However, it's not from my computer.
When this worm infects a computer, it not only sends itself to everyone in the infected user's address book, it inserts a random address from that address book in the FROM field. You have to look at the extended headers to determine where the mail actually originated.
I know at least one or two members of this board got infected and had my email address in their address books; so even though I didn't send the mail, it looks like it came from me.
Here's a little info about it:
McAfee identified this worm as W32/Klez.h@MM. The subject line varies; can be "Hi, honey," "KLEZ virus removal instructions," "Meeting reminder," "Microsoft security update," and many other randomly generated subject lines.
This one will automatically execute itself using the Microsoft IE vulnerability in Outlook Express versions 5.01 - 5.5 unless you have installed Security Patch 2. That means if you have an older version of OE, you don't even have to download the attachment; it will open itself and infect your system.
More info on the virus can be found at
http://vil.nai.com/vil/content/v_99455.htmAnyway, to anyone who might think I sent them a virus, I did not.
Hopefully forewarned is forearmed.