SPF Resource Record
With an SPF resource record , a sender policy (see Sender Policy Framework ) could be defined for a DNS name. However, this type of resource record was revoked in April 2014 because sender policies had meanwhile found widespread use within TXT records and the responsible standardization committee did not expect a dedicated resource record to become established. TXT is therefore the only standard-compliant RR type for SPF.
The dedicated SPF record type is supported by some SPF implementations and by BIND from version 9.4.
construction
- Surname
- the domain name to be protected
- TTL
- specifies how long the RR can be kept in the cache
- IN
- Internet
SPF (99)
- text
- a sender policy according to the SPF specification
example
example.com. 3600 IN SPF "v=spf1 mx -all"
Web links
- RFC 4408 - Sender Policy Framework (SPF) for Authorizing Use of Domains in E-Mail, Version 1 .
- RFC 7208 - Sender Policy Framework (SPF) for Authorizing Use of Domains in Email, Version 1 .