Glossary
Email authentication
permerror
A permanent SPF evaluation error — a malformed record, more than one SPF record, or a record that exceeds the processing limits. It is a hard failure: the check cannot produce a pass no matter which host sent the message.
Defined in RFC 7208 §2.6.7.
Where this appears
The lessons that use this term, and what each is for.
Email Authentication FundamentalsThe limits that break SPFCount a record against both RFC 7208 limits and say which one it will hit first.SPF PractitionerSeven results, and what receivers do with eachName the result a given evaluation produces and predict how a receiver treats it.SPF PractitionerCounting, with the working shownProduce a defensible lookup count for any record, including every nested include.SPF PractitionerFinding the void lookupsLocate every void lookup in a record tree and say which term produced it.SPF PractitionerTracing a permerror to its termName the exact term that produced a permerror, not merely that one occurred.SPF Practitionertemperror, and why it is not your recordTell a transient DNS failure from a broken record, and say who has to fix it.