using spamassassin to classify spam

I would like to write a rule that checks if a header has a domain name that doesn't resolve. For example this header: List-Unsubscribe: I want to extract the mumble.aidemxwzlwt.bwbibibi.edu and run it through AskDNS and if I get an

Re: using spamassassin to classify spam

On 3/24/22 5:00 PM, Michael Grant wrote: List-Unsubscribe: I want to extract the mumble.aidemxwzlwt.bwbibibi.edu and run it through AskDNS and if I get an NXDOMAIN, I want to score it. Remember, there are historic mechanisms for

Looking for a quick reference key about understanding the basic spamassassin headers

Looking for a quick reference key about understanding spamassassin headers on messages a) for the most important spamassassin headers b) and for all the spamassassin headers