wait, there is a line on top of that email saying: Why is this message in Spam? It has a from address in accounts.l.google.com but has failed accounts.l.google

wait, there is a line on top of that email saying: Why is this message in Spam? It has a from address in accounts.l.google.com but has failed accounts.l.google.com's required tests for authentication. what are required tests for authentication?