Is there any book or online course that I can use to Learn advanced DNS Setting like the detail about each record?
So I have been building website for some years now and I know how to basic DNS like setting up subdomains,mails etc. But I would like to know more about this. Something like how each record works? Difference between cname and a record. Why txt record spf and dkim etc. Can you guys share any book or course that I can use to learn more about this?
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