After you add your domain, Simplesat will provide you with the necessary DNS entries to add.
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The domain authentication process differs for each registrar, but the overall instructions are the same: add three separate CNAME records.

Here's an example of Simplesat DNS entries:

The CNAME values should not include your company URL. 

Using the screenshot above, the entries that should be added to your DNS hosting provider are as follows:

To troubleshoot failed DNS entries, you can use this handy DNS lookup tool or other similar tools to find more about what the problem is.
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If you have any questions or need assistance in doing this, just let us know. We'll be happy to help walk you through the process.
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📖 Authenticating domains for email delivery
📖 Is it possible to have a different DKIM selector if I already use SendGrid for another service?
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