Technical Guidance articles

Vendor Management: The Importance of Identifying Third-Party Sources

By John Bowers | Deployment, Technical Guidance

For many organizations, the deployment of DMARC across their domain catalog can involve many challenges. One such challenge is the identification of all third-party services, also called sources, that send...

What is a DMARC Record?

By Vaughn Talbert | Deployment, Technical Guidance

What is a DMARC Record? As a mission-driven company, dmarcian is focused on spreading the adoption of DMARC. Because of this, we interface with a wide range of people with...

Top 5 DMARC Deployment Mistakes

By John Bowers | Deployment, Technical Guidance

With phishing exploits at an all-time high, there’s growing awareness of how DMARC can help protect domains and make email more trustworthy. It’s no secret that enacting DMARC can be...

DMARC Reporters Who Skip the DKIM Selectors

By Vaughn Talbert | Technical Guidance

With the DMARC technical standard, the importance for reporters to include DKIM selectors in their reports cannot be minimized. DMARC aggregate reporting is high level and includes all the information...

DKIM Selectors

By Vaughn Talbert | Deployment, Technical Guidance

This article takes a look at DKIM Selectors in particular. We explain: What DKIM Selectors are Where to find your own DKIM Selector How does DKIM work? To use DKIM,...

DMARC and Email Deliverability

By Vaughn Talbert | Technical Guidance

Deliverability, also referred to as inbox placement, is a key concern for today's marketers. With a background in email deliverability, dmarcian Strategic Alliances Manager Victor Minev discusses the effect that...

How to Handle Your Parked Domains

By Vaughn Talbert | Deployment, Technical Guidance

It is easy to overlook parked domains (also referred to as inactive domains) when it comes to email security. After all, these domains are typically inactive and in some cases...

RUF – What is it Good for?

By Vaughn Talbert | Deployment, Email Technology, Technical Guidance

Forensic (RUF) reporting was once widely used for email troubleshooting, but privacy concerns have now marginalized its use. With over seven years of email ecosystem experience, dmarcian Deployment Consultant Mohammed...

Three Steps for Basic BEC Defense

By John Bowers | Ecosystem News, Email Technology, Technical Guidance

Business Email Compromise attacks hurt. Here’s how to deal. Weaponized fake emails are fooling businesses around the globe. When combined with easy access to information from business-facing social networks, BEC...

Videos on all things DMARC

By dmarcian | Email Technology, Technical Guidance, Videos

We're very pleased to feature a series of short, technical videos that walk through various aspects of DMARC. These videos draw upon the best of our training courses, are freely...

Are your Google Calendar Invite Responses Blocked by DMARC?

By Vaughn Talbert | Deployment, Email Technology, Technical Guidance

We have previously discussed the issue of Google Calendar invites (and other Google Suite services) being broken from the perspective of a G Suite owner. But there is also an...

The Importance of Sources in DMARC

By Vaughn Talbert | Email Technology, Technical Guidance

What are “sources,” what types of sources are there, and why do we call them that? A “source” is what we call any company that offers its clients the ability...

What is DMARC.IO?

By Vaughn Talbert | Deployment, dmarcian Platform, Ecosystem News, Inside dmarcian, Technical Guidance

As presented in the post, The Importance of Sources in DMARC, source information is displayed in several places. Most are within dmarcian’s application itself, but there’s one external repository -...

Understanding Shadow IT

By Vaughn Talbert | Email Technology, Technical Guidance

For those who’ve been doing IT long enough to remember using a green display monitor also remember a time when everything was locked down and centralized. During the early 1980s,...

Adding DMARC to Office 365

By Vaughn Talbert | Technical Guidance

Microsoft's Office 365 platform supports DMARC (Domain-based Message Authentication, Reporting, and Conformance). The complete Microsoft guide is listed here. SPF Record The starting point is to review the SPF and...

Why SPF is so funky in today’s modern world

By Vaughn Talbert | Email Technology, Technical Guidance

SPF (Sender Policy Framework) has been around for a long time and enjoys a rich history reaching back to 1997, with the SPF Project itself starting in June 2003. (a timeline...

How to get Google Calendar Invites to Pass DMARC

By Vaughn Talbert | Ecosystem News, Email Technology, Technical Guidance

Even though Google has long supported DMARC, a handful of Google applications are still not capable of sending DMARC compliant email using both SPF and DKIM. If you’re a Google...

GDPR’s Impact on DMARC Data Collection

By dmarcian | Ecosystem News, Technical Guidance

When the EU passed the General Data Protection Regulation (GDPR) it triggered a worldwide examination of different types of data, including the data found in DMARC Aggregate (RUA) and Failure (RUF) reports. A legal analysis from ECO, the German Internet Industry group, breaks down all aspects of DMARC data and the concerns involved related to…

Phishing leaves a DMARC trail

By dmarcian | Ecosystem News, Inside dmarcian, Technical Guidance

Earlier this year The Anti-Phishing Working Group (AWPG) and dmarcian had the opportunity to look for patterns across data sets to see if anything interesting emerged. We decided to cross...

Subdomain Management Changes

By dmarcian | Ecosystem News, Technical Guidance

As many of you may have noticed, there have recently been some changes to the UI regarding subdomains. After talking with people about how subdomains were being used and abused across the internet, we decided to spend some time rethinking how dmarcian process, sorts and displays subdomains. These new changes allow our system to handle…