I received (but did not open) an email supposedly from UPS about a non-deliverable package (that I had not sent) and warnings of what it would cost if I didn't collect it, etc etc. I deleted, unopened, ran full scan etc. Because it had been sent from a Pipex address I also forwarded it to the spam/abuse department there and received a reply that it contained "Mal/EncPk-FZ". Today a friend tells me that he received the same but he did open it. What's his best way of removing it?