Linux is fine until you run into a virus designed to exploit Linux.
There are just about as many security updates for Linux as there are for Windows these days.. depending on the brand of Linux you want to run.

I use Linux Live CD's to get into infected systems and repair sometimes, so I know it has benefits for trojans designed to exploit windows, but it is by no means completely safe.

I would be interested in viewing the file contents, but I'd need to access it on a safer machine. Besides, a lot of mail servers will indeed catch it and stop delivery, as a lot of them are running linux also!
Congrats on outsmarting this one, and thanks for the extra efforts.
Other sites with the infection include dademoldinspectors and enviropro.net... among hundreds of others.
If you are interested in helping for these types of things, check out badwarebusters.org


I do not work here, but the benefits are still awesome
Make your sound your own!