WILMINGTON, Del. — A new fireside chat featuring Todd Herr, Principal Solutions Architect at GreenArrow Email and co-editor of DMARCbis, highlighted the impending update to DMARC (Domain-based Message Authentication, Reporting, and Conformance) on Tuesday, according to a release from Sendmarc.
The discussion, led by Dan Levinson of Sendmarc, detailed the protocol’s progression through the Internet Engineering Task Force (IETF) standards process and anticipated changes for security and email teams as authentication requirements tighten. DMARC was initially published in 2015 and has grow a widely adopted control to reduce domain spoofing and improve email domain visibility.
Herr outlined how DMARCbis, currently in draft form (draft-ietf-dmarc-dmarcbis-41), reflects lessons learned from real-world deployment, including clarifications aimed at improving long-term maintainability. If approved, DMARCbis would supersede RFC 7489.
“I don’t notice DMARCbis as a revolution so much as an evolution,” Herr said, as reported by Sendmarc.
The fireside chat focused on several key updates relevant to businesses planning email security initiatives. These include updates to record tags intended to reduce ambiguity and inconsistent implementation, and clearer expectations for reporting and participation, including the operational perform required to maintain aligned authentication and useful reporting. A standardized DNS tree walk approach, introduced in DMARCbis, aims to improve how receivers discover organizational domain policies.
The update comes as email security remains a critical concern for organizations globally. The Ontario Securities Commission (OSC) issued a warning on February 24, 2026, alerting investors to several unregistered companies dealing in securities, highlighting the ongoing risk of fraudulent activity often facilitated through email. The OSC advised investors to verify the registration of any investment firm or advisor before engaging in transactions.
Separately, a U.S. Security alert issued late Sunday night urged U.S. Citizens in Puerto Vallarta and other Mexican tourist destinations to shelter in place following widespread violence linked to the killing of a Jalisco New Generation Cartel leader. The alert cited canceled flights and suspended ride-sharing services as a result of ongoing security operations and road blockages.
