Anybody getting a sudden avalanche of spam in Mac Mail?

It’s like my settings have changed overnight. Stuff that’s always been accurately marked as spam is showing up in my inbox. “Circa Knee”, and my personal bleccch un-favorite “School… Of… Squirt”. SS has been catching every one of them til now. In the last 24 hours - not.

I’ve read some of the support pages and, if I’m reading it right, I need to reset SS to a fresh start, and train all over again? I hope that’s not the case.

Resetting is rarely the proper remedy. Usually a sudden change like that indicates that SpamSieve was turned off. The first step is to make sure it’s still enabled in Mail and that the rule works. There’s more information here.