Ok, here's what I'm trying to do, hopefully this can be done somehow.
I'm trying to take a list of domains and blacklist them altogether, as these domains don't seem to EVER get blacklisted, and they're where 99% of my spam comes from. Here's the conf I've got in to test this, added into the config editor through WHM:
deny domains = *.mail.yahoo.com :\
*.horfinc.com
message = You need to send mail from a real provider, not one that is known for spam.
Yet, mail from these addresses (I used my yahoo account to check) is STILL allowed in the server. Is there ANY way to blacklist domains outside of rbl's using ACL?

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