How Can I Tell Who is Using DMARC?

Often when people first hear about DMARC, their immediate reaction is, “That’s great! Who’s using it?” That’s a good question, because DMARC can only prevent fraudulent email from reaching inboxes when both senders and receivers have implemented it. Checking Senders For convenience, we’ve collected a sample of notable organizations or domains that have published DMARC […]

Instructional DMARC videos from Dmarcian

DMARC report processor Dmarcian.com has made a series of videos about DMARC and email authentication available on their website. There is no charge to view the nine videos, which are based on presentations Dmarcian has developed and offered over the past several years. You can find all nine videos here: https://space.dmarcian.com/videos-on-all-things-dmarc

“DMARC is easy!” “DMARC is hard!” Which is it?

It happens so often in IT that it’s a cliché. Somebody comments to senior management about a complex, long-term project you’re involved in, saying: “That’s easy, I could do that in an afternoon. What’s taking your people so long?”  Or you’ve spent weeks on careful research, building the business case, explaining the cost-benefit trade-offs, and […]

Global Mailbox Providers Deploying DMARC to Protect Users

Berkeley, California – October 19, 2015 – The Domain-based Message Authentication, Reporting, & Conformance (DMARC) specification has proven its value in combating fraudulent email since its introduction three and a half years ago. Thousands of companies use it to prevent billions of messages fraudulently using their Internet domains from reaching inboxes, thereby protecting their customers and employees […]

M3AAWG Conference in Atlanta to Feature DMARC Training

At the Messaging, Malware and Mobile Anti-Abuse Working Group (M3AAWG) conference in Atlanta on Monday, October 18th, DMARC.org will provide a training session on DMARC and email authentication. Barry Jones of ACS Technologies will present a representative case of how to use DMARC and email authentication to protect users from relentless phishing attacks and other […]

North American ISPs Using DMARC to Protect Inbox

The biggest global mailbox providers – AOL, Google*, Hotmail/Microsoft, NetEase, Yahoo – have been using DMARC to filter out fraudulent email sent to their users from the beginning. But readers have told us that some major North American ISPs are also using DMARC to protect their customers. We like to recognize these ISPs for using […]

“Email Authentication Basics” Slide Deck Now Available

A new presentation explaining the basics of how email authentication works is available from DMARC.org. The concepts and common usage of SPF, DKIM, and DMARC are all covered in this introductory slide deck, which is made available under the Creative Commons Attribution-ShareAlike 4.0 International License (CC BY-SA). You can download the 1.9MB PDF file clicking […]