Gmail Security Setup:
Sign in to admin.google.com with your Google Workspace user name and password.
In the top right corner, click the App Launcher
We recommend you enable email authentication and security methods for Gmail.
Best practices for email authentication
We recommend you always set up these email authentication methods for your domain:
- SPF lets servers verify that messages appearing to come from a particular domain are sent from servers authorized by the domain owner.
- DKIM adds a digital signature to every message. This lets receiving servers verify that messages aren't forged, and weren't changed during transit.
- DMARC enforces SPF and DKIM authentication, and lets admins get reports about message authentication and delivery.