SPF records are defined as a single string of text. There’s also an SPF record type, but it’s deprecated, and you should always have at least the TXT record definition present, even if you use the SPF type. SPF records are typically defined using the TXT record type. It’s defined in RFC 4408, and clarified by RFC 7208. It’s used to indicate to mail exchanges which hosts are authorized to send mail for a domain. What’s an SPF record?Īn SPF record is a Sender Policy Framework record. We may discontinue serving SPF records in the future, so you should always have a TXT record whose content is the same as the record using the SPF type. Although the SPF record type is deprecated, it’s still supported by DNSimple name servers.
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