Blacklist not working on One particular email address

[Julian Field]

The address that matters to MailScanner is the envelope "From" address, not
what is in the "From:" header. Fortunately, that is exactly what is put in
the "Return-Path:" header, so that is where you should get the address to
block. As you can put in wildcards in rules, you actually only need a tiny
change to make it work. Just put