SendGrid sent me e-mail on which CNAME records sohuld be addded. Adding those CNAME records will still not be visible from outside by external tools. And sendgrid service still says that there is an error: cname records does not exist.
Can you help?
These answers are provided by our Community. If you find them useful, show some love by clicking the heart. If you run into issues leave a comment, or add your own answer to help others.