Glossary: Endpoint, Application and Email Security
ARC (Authenticated Received Chain)
Also written: RFC 8617
An email standard that lets forwarders and mailing lists pass on the SPF, DKIM and DMARC results they saw, so a later receiver can still trust them.
Where the book teaches it
Related terms
SPF (Sender Policy Framework)DKIM (DomainKeys Identified Mail)DMARC (Domain-based Message Authentication, Reporting, and Conformance)