Howto config postgrey not to allow SPAM based on whitelist?

Howdy, 9 to 10 months in using SPAM free MIAB and starting yesterday I’m getting flooded w/ SPAM allowed thru via postgrey (and spamassassin). Log follows:

box postgrey[3624]: action=pass, reason=client whitelisted by (2/rare spam),, client_address=,,│ Fe│

I tried directly entering the SPAM email address into the Spamassassin blacklist but no change. has forms and such to send the email in question headers and body but at this point I don’t trust either.

Is there anything short of running my own dns blacklist on the MIAB server side to bounce this SPAM?

Please advise.