Mesage sender is Unauthenticated message from Google

What is the name of the domain?

www.americantire.net

What is the error number?

550-5.7.26

What is the error message?

Sender is Unauthenticated

What is the issue you’re encountering

Emails rejected by googe for being unauthorized

What steps have you taken to resolve the issue?

Tried to contact Cloudflare did not know they were hosting our emails this staryed last year.

What are the steps to reproduce the issue?

Send americantire.net to any gmail account

Screenshot of the error

Emails are being rejected by Google because you have missing records. You need to pass DKIM record, SPF record which are currently unavailable for the said domain. You can check the status of the records here:

Further tip is here:

By adding the necessary records will fix the issue.