DKIM
DomainKeys Identified Mail, an email-authentication method that adds a cryptographic signature to a message. The public verification key is published in a DNS TXT record beneath a selector-specific name.
Category glossary
Search all termsEmail security
4 definitions associated with Email security.
DKIM selector
A label identifying which DKIM public key should be retrieved for a signed email. The lookup name uses selector._domainkey followed by the signing domain.
DMARC
Domain-based Message Authentication, Reporting, and Conformance, a policy framework that evaluates SPF and DKIM alignment and publishes policy and reporting addresses in DNS TXT records.
SPF
Sender Policy Framework, an email-authentication mechanism that publishes which systems are authorized to send mail for a domain, normally in a DNS TXT record. The dedicated SPF RR type is obsolete for deployment.