Stopping spam on Google Groups

Spammers seem to have gotten smarter recently, and able to post garbage to Google Groups. There was some spam on a couple of the groups I’ve created, and members helped me find a way to stop it. I’m glad they did, because since then it’s stopped an increasing flow of spam. I just deleted and banned a whole bunch of emails titled “answer group” across different groups, and I see the same crud got through to a group I’m on but don’t own.

Here’s the recipe:

That’s all. Then you can log in and delete emails from spammers, and ban them, so that at least only you, and not the whole group, gets spammed.