Publish and find the record
02A DNS TXT record beginning with v=spf1 carries the policy.
Related RFCs and changes
“Updates” changes part of an earlier RFC. “Obsoletes” replaces it. This list shows selected related documents.
DIAGRAM§ 3.1 ↗
RFC 7208 · § 3.1EXAMPLE
3 / 3
03
Reject ambiguity
Do not choose arbitrarily between two competing SPF policy records.
Protocol participantThreat or exceptionProtocol controlSimplified drawings · precise section references
Read the updated RFC section ↗
Only TXT is used by this specification; the older SPF RR type is discontinued.
- Only TXT is used by this specification; the older SPF RR type is discontinued.
- Multiple SPF records for one owner name cause a permerror.
- A TXT record can contain multiple character strings that are concatenated.
Examples are illustrative. Consult the linked RFC and its errata for implementation details.
Read the RFC section ↗Diagrams simplify the RFC. Read the linked sections for complete requirements.
Privacy