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DMARC RFC Guide: How the Revised Standard Affects You

DMARC RFC Guide: How the Revised Standard Affects You

The DMARC specification was first published in 2012, and the Internet Engineering Task Force is proposing changes in DMARCbis. The DMARC working group has been discussing updates to the DMARC specification so it’s more flexible and easier to understand and deploy.

Ecosystem NewsEmail Technology

Why DMARC Belongs in Your 2027 Budget

Why DMARC Belongs in Your 2027 Budget

For years, organisations have recognised the importance of email authentication. DMARC has appeared on risk registers, surfaced during audits, and discussed after phishing incidents. Yet it often remains stuck as “something we should get around to.”

Security Insights

Why DKIM Only Isn’t Safe Enough

Why DKIM Only Isn’t Safe Enough

DomainKeys Identified Mail (DKIM) is a cornerstone of email security. By providing a cryptographic signature, it ensures that an email message has not been altered in transit and that it originates from the domain it claims to.

DeploymentTechnical Guidance

BIMI Beyond the Basics: What it Takes to Get your Logo into Inboxes

Brand Indicators for Message Identification (BIMI) is a standard that associates your official brand logo with an email authenticated by DMARC. BIMI gives brands opportunities to reinforce their logo while building trust as a sender of authentic messages.

Ecosystem NewsEmail TechnologySecurity Insights

Horizontal Value: Scaling Ideas Beyond Yourself

Horizontal Value: Scaling Ideas Beyond Yourself

As part of our ongoing thought leadership series, we are highlighting the diverse people who make up dmarcian. In this piece, hear from one of our developers on problem-solving and navigating complex work systems.

Inside dmarcianThought Leadership

DMARC Implementation in Japanese Higher Education: Status and Challenges

DMARC Implementation in Japanese Higher Education: Status and Challenges

In this DMARC adoption study, we analyzed parent domains in Japan’s higher education landscape and the challenges IT teams face in securing their domains.

Ecosystem NewsSecurity Insights

How DMARC Helps Detect Organized SPF Abuse Schemes

How DMARC Helps Detect Organized SPF Abuse Schemes

In this article, our Service Delivery Specialist Steven Iacoviello discusses how criminals are targeting dangling CNAMES and DNS entry errors to hijack domains for phishing exploits.

Security InsightsTechnical Guidance

What is a CNAME record?

What is a CNAME record?

A CNAME (Canonical Name) record is a Domain Name System (DNS) record that makes one DNS name an alias of another DNS name.

Email TechnologySecurity InsightsTechnical Guidance

Avanan: Uncovering Mystery Email Volume

Avanan: Uncovering Mystery Email Volume

During the review of your domain’s DMARC data, you may come across something puzzling: large numbers of emails sent on behalf of your domains from IPs that resolve to *.cloud-sec-av.com. Ash, our Director of Professional Services, helps solve the riddle.

Security InsightsTechnical Guidance

DMARC Adoption: FIFA World Cup 2026

DMARC Adoption: FIFA World Cup 2026

In this edition of our DMARC adoption research, we are considering the FIFA World Cup ecosystem and how national teams, league clubs, sponsors, and host supporters are faring with domain security as they hit the global sports spotlight in June.