I find this surprising. Are you sure you're not allowed to change the
"respond-to" address for your posts to USENET? With MS Outlook you can
change it to any arbitrary non-existent email address to foil
spammers.
I too have continued to be subjected to a torrent of SWEN virus
emails to the account I use for USENET postings. In my case I can't
change it because I post using Google's news posting service which
requires you to use a real email address.
This account has now become useless for email, to the extent that I
have to direct responders to an alternative addess for email as below.
Bob Clark