SpamAssassin - adding subdomains to blacklists


E-mails are bypassing the blacklist. Not sure what to do about that. I have added wildcards to catch the subdomain, but I’m not sure SpamAssassin will read the wildcard-- and so far it hasn’t worked. Any insight on this?

An example domain is "".
I have "" and “@*” as priority 6. I’ve read somewhere about SpamAssassin reading other parts of the header. The example I use has the following in the header:

Return-Path: f-ghost?