SPF/TXT Duplication

Using SPF Record

According to RFC 7208, the Sender Policy Framework (SPF) is a DNS record that declares which host are, and are not, authorized to use a domain name for the "HELO" and "MAIL FROM" identity.
Through the years and after doing a lot of researches in the DNS best practises, the explorers have established that the TXT record is a better alternative for authorization of using the domain name identity. The SPF record still exists in the DNS hosting, but it must be published as a TXT record only.
Some of the DNS checkers continue to revise the DNS zone's file for SPF when there is a query for it. We recommend to our Customers, if they have to declare the authority for their domain name with SPF record, to create duplicated TXT and SPF records.

Last modified: 2017-10-10
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