When adding CNAME records to the GoDaddy domain host DNS records, they typically will automatically append the domain name to the record automatically.
For example, if a record like this is added:
It actually is added like this:
To resolve this issue, edit the CNAME record to remove the
.domain.com portion of the record, or remove, and create the records again without the
.domain.com portion of the record.
|Record Type||Record Name||Record Value|
After updating DNS records, while it may be quicker, please allow up to 24-48 hours for the records to propagate and show as Verified in SendGrid. If you've waited that time period, and they still are not propagating, please don't hesitate to reach out to Support via the Support Portal.
Notice: If you have multiple Domain Authentication entries for the same domain in your SendGrid account (Settings > Sender Authentication), make sure to remove all the ones that are Pending or Failed and leave only the one(s) that state Verified.