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We're on a mission to spread DMARC across the globe to make email and the internet safer for all.
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𝙃𝙞 𝙩𝙝𝙚𝙧𝙚. 🦋 We’re here to help make the open security email controls of #DMARC, #SPF and #DKIM accessible to everyone.
DKIM selectors are crucial for email servers to locate and verify the sender’s public key, adding security and clarity to email authentication. Learn why #DKIM selectors are essential for identifying legitimate emails and effective #DMARC reporting: dmarcian.com/dkim-selecto...
December 8, 2025 at 4:02 PM
Wondering if an email source supports DMARC? Our continually updated repository features over 1,300 sources—powered by real-time data from our advanced source classification engine. It’s open to everyone, and invaluable at any stage of your #DMARC journey: dmarc.io
December 5, 2025 at 4:04 PM
Our analysis highlights the progress—and gaps—in DMARC policy enforcement across Japan, with insights into vulnerabilities, recent #scams, and regional challenges. Here’s what we discovered: dmarcian.com/dmarc-adopti...

#YahooJapan #Yahoo #EmailAuthentication #Cybersecurity
December 4, 2025 at 4:02 PM
Our Client Groups feature allows #MSPs to manage multiple clients, send alerts, and reports, all in one account. Learn more about how to set up a client group and its functionalities: dmarcian.com/how-to-creat... #ManagedServiceProvider #DMARC #EmailAuthentication #dmarcian
December 3, 2025 at 4:02 PM
Want to stand out in a competitive inbox? New #DMARC mandates and updated requirements from Gmail and #Yahoo make reputation management crucial. Get our top tips to keep deliverability high—this season and beyond: dmarcian.com/dmarc-peak-s... #delverability #emailsecurity #Spam
December 1, 2025 at 4:02 PM
As proud members of the Internet Society (ISOC), we’re committed to strengthening online safety. By advancing email authentication and DMARC adoption, we help create a more secure, resilient internet for everyone.

#InternetSociety #EmailSecurity #Cybersecurity #DMARC
November 28, 2025 at 4:04 PM
What is #SpearPhishing? Spear phishing is a highly targeted form of phishing in which attackers send convincing, personalised emails to specific individuals or organisations.
Read our latest article to explore common attack methods, recent exploits, and how DMARC helps: dmarcian.com/dmarc-combat...
November 27, 2025 at 11:01 AM
Germany’s BSI declared 2025 the Year of Email Security.
We analyzed DMARC adoption across top German businesses & uncovered key takeaways from the latest BSI recommendations: dmarcian.com/germany-reco... #DMARC #Cybersecurity
November 26, 2025 at 4:01 PM
Our SPF Surveyor will help you figure out which SPF record entries are in use and which ones are no longer needed. The results can help you keep your #SPF records tidy, stay beneath the 10 DNS lookup limit and decrease your attack surface. youtu.be/EjJpSNVyw3w?...
SPF Surveyor – Free DMARC Tools by dmarcian
Learn how to utilize dmarcian's SPF Surveyor, a free tool available on dmarcian.com. The SPF Surveyor allows you to look in detail at any given domain's SPF record information and gather insights to…
youtu.be
November 25, 2025 at 4:03 PM
Whether you’re onboarding one client or scaling to hundreds, our platform makes it fast and predictable. Discover resources built with MSPs, for MSPs: dmarcian.com/managed-serv... #MSP #EmailAuthentication #DMARC #Cybersecurity #MSPCommunity
November 24, 2025 at 4:01 PM
True or False? "If a new vendor is seen to be sending traffic for my domain, I should immediately put that domain in my SPF record."

Learn answers to questions like this and more, and even earn your certificate with: www.dmarc-academy.com #DMARC #dmarcian #EmailSecurity #FreeCourses
November 21, 2025 at 4:01 PM
We revisited our review of the DMARC Adoption status of the World's Top 100 banks. Take a look at our recent analysis to see how they measure up post DMARC mandates: dmarcian.com/top-100-bank...

#DMARC #dmarcian
November 20, 2025 at 4:04 PM
In our latest article, we analyzed the top 100 banks and the top 100 businesses in Switzerland to assess their security posture: dmarcian.com/switzerland-... #EmailAuthentication #Cybersecurity #DMARC #dmarcian #phishing
November 19, 2025 at 4:02 PM
TLS reporting involves receiving reports from the internet about potential connection security issues with your inbound email systems. We've highlighted common error codes and what they mean to help you identify and address these issues effectively. dmarcian.com/tls-reporting/ #SMTP #DMARC #DNS
November 18, 2025 at 4:04 PM
We surveyed a sample of top government domains in NZ to see how they are adapting to the newest mandate: dmarcian.com/nz-governmen... #DMARC #EmailAuthentication #Emailsecurity
November 17, 2025 at 4:04 PM
Are you receiving aggregate reports? #RUA reports offer a complete overview of your domain's traffic, while RUF reports provide redacted copies of emails that fail #DMARC compliance. Start by receiving RUA reports. Learn more about their importance: dmarcian.com/rua-vs-ruf/ #EmailSecurity
November 14, 2025 at 4:02 PM
Today is World Kindness Day!
A reminder to be kind—to each other, to ourselves, and to the world around us. Kindness bridges divides and builds connection, no matter where we are.

Let’s choose kindness today and every day after. 💚
#WorldKindnessDay #Bcorp #dmarcian
November 13, 2025 at 4:06 PM
Legitimate email can fail #DKIM because of canonicalization issues. You can resolve these issues by adjusting DKIM canonicalization settings on your email gateway systems. Learn how to identify and remediate with our guide: dmarcian.com/dkim-failure... #DMARC #EmailSecurity #dmarcian
November 12, 2025 at 4:07 PM
Email compromise & identity fraud cost small businesses an average of $56K AUD per incident. The updated SMB1001 framework bridges the gap between the ASD Essential Eight and complex enterprise standards—giving SMBs & MSPs a clear path to compliance.
dmarcian.com/smb-1001-dma... #EmailSecurity
November 11, 2025 at 4:02 PM
As of November 3, 2025, Gmail has entered its next phase of enforcement, applying even tighter controls on non-compliant traffic. Messages that fail to meet sender requirements may face delivery disruptions, including temporary or permanent rejections. dmarcian.com/yahoo-and-go...
#Gmail #DMARC
November 10, 2025 at 4:01 PM
Stay ahead in #DMARC and email security—all in one place.
Our newsletter brings you the latest insights, expert advice, and practical resources to make email safer for everyone. Join tens of thousands of subscribers building a safer email ecosystem: dmarcian.com/newsletter/
#EmailSecurity #dmarcian
November 7, 2025 at 4:03 PM
The #DMARC spec is getting an update. The IETF is proposing changes—DMARCbis—to improve clarity, flexibility, and ease of deployment.

Get the breakdown of what's changing & learn how you can prepare: dmarcian.com/dmarcbis-vs-...
#DMARCbis #DKIM #EmailAuthentication #cybersecurity
November 6, 2025 at 4:04 PM
Germany’s BSI declared 2025 the Year of Email Security.
We analyzed DMARC adoption across top German businesses & uncovered key takeaways from the latest BSI recommendations: dmarcian.com/germany-reco... #DMARC #Cybersecurity #dmarcian #EmailSecurity
November 5, 2025 at 4:03 PM
Did you know? The frequency of #DKIM key rotation depends on key length. 1024-bit keys should be rotated more often than 2048-bit keys, as they are easier to break.

Learn more about DKIM key rotation methods and find the best approach for you: dmarcian.com/rotate-dkim-... #EmailSecurity
November 4, 2025 at 4:03 PM
Our analysis highlights the progress—and gaps—in DMARC policy enforcement across Japan, with insights into vulnerabilities, recent #scams, and regional challenges. Here’s what we discovered: dmarcian.com/dmarc-adopti...

#YahooJapan #Yahoo #EmailAuthentication #Cybersecurity
November 3, 2025 at 11:05 PM