The CNAME record points to sendgrid.net and creates an alias for subdomain.yourdomain.com. Your communications will also be signed by this address, and CNAME will be visible to your recipients.
What it should look like:
You'll need to add certain records to your DNS server if your account has a dedicated IP and you want to configure reverse DNS for it. There will be one CNAME record within that set of records.
Some DNS hosts may add your top-level domain to the end of DNS records you create, resulting in "example.domain.com.domain.com" for a CNAME for "example.domain.com."
When inserting new records to your DNS panel, try to strictly adhere to the practice on existing records, since you may only have to append what is to the left of the top-level domain.
For example, a CNAME for "example." becomes "example.domain.com"
If you encounter this error, it means that the TXT record has been divided up. The fix will be reassembling the key into a single set of quotations, as follows:
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