Marketing Calendar 2026
DMARCbis
DMARCbis is an updated version of the DMARC (Domain-based Message Authentication, Reporting and Conformance) standard. It describes how email domains can protect against unauthorised use by providing updated technical guidance for validating legitimate emails and reporting fraud attempts.
DMARCbis is a revised specification of the original DMARC standard, created by the Internet Engineering Task Force (IETF). It builds on the initial DMARC framework, which helps domain owners prevent email spoofing. DMARCbis outlines best practices for implementing authentication methods like SPF (Sender Policy Framework) and DKIM (DomainKeys Identified Mail) and defines how recipients should process unauthenticated messages.
Typical features of DMARCbis include stricter enforcement rules, clearer guidance for policy expressions (like p=none, p=quarantine, p=reject), and improvements to feedback and reporting formats. It’s mainly used by IT professionals, compliance teams, and marketers who rely on email campaigns to reach customers and prospects. For marketers, DMARCbis means higher confidence that their campaigns will be delivered securely and seen by the intended recipients.