What does Lock it down mean?

On SpoofCoach, Lock it down is the third row on At a glance. It’s the company mail rule that says how strict your domain is about mail that isn’t clearly yours.

Checks out on this row means that rule looks present and readable. Needs a look means it isn’t clear yet — so don’t treat your domain as finished until you take the one next step on screen.

Lock it down is not a promise that scams stop forever. It’s whether that last piece of setup is in place so strangers have a harder time emailing as you.