Should we contact that author and let him know he is infected, or simply remove him from the list?
Probably remove him from the list, then inform him and ask to subscribe if he is still interested.
You need to be careful, the 'From:' in the mail is probably wrong, so you need to check the IP address reported by the first (known) MTA.
I've been receiving a lot of bonce messages for this virus, and my NetBSD system isn't compromised (I'm not actually running wine!)
David