I am so used to Spamsieve being perfect! (Thank you authors!) Lately it has been missing a lot of spam. We do get a lot of spam to derivations of our addresses (the ISP insists * is not enabled on the domain - hmmm) I reset the corpus and have been training away, however, it’s still missing messages it used to catch - like those with “sex” “drugs” “chemist” etc in the body text. I have entered these as rules in the Blocklist, but it’s not working. I am running 10.5.7 but this started happening about a month ago, like someone had just turned on a switch.
It sounds like there’s a setup problem so that the e-mail program isn’t letting SpamSieve see those messages. Please see this page.