Email updating google servers
If you've received a Gmail upgrade confirmation email, this means that Gmail has been added to your existing Google Account.
You can now sign in on the Google Accounts homepage with your Gmail username and password.
By default, if you configured this setting previously, we’ll retain your existing configuration.
You may also need to update your DKIM configuration or the Sender Policy Framework (SPF) record for your domain.
By default, when messages are routed to your outbound gateway server, G Suite Gmail checks to see if secure transport (TLS) is supported by your outbound gateway server.
After 72 hours, if you still need help or if you can't access your domain's DNS settings, contact your domain host directly for assistance.
If you want to troubleshoot your email delivery, go to Troubleshoot MX records to learn about troubleshooting problems with your email.
You can track prior changes under Admin console audit log.