Michael Rueger <michael at squeakland.org> wrote:
> David Faught wrote:
> 
> > Just so you're aware, someone is sending out lots of email with
> > attached viruses using my Yahoo email address as the return address.  I
> 
> This is actually becoming a nightmare for mailing lists. I already had 
> to put the squeakland list into emergency moderation mode. Virus mails 
> started to come through because of valid return addresses.

Yes, this is perhaps the antidote long term:
http://spf.pobox.com/

regards, Göran