Understanding DMARC

Angela Cheong
Feb. 19, 2013 by Angela Cheong

You’ve been hearing us talk about DMARC for the past 2 months. But do you really understand what it is?

Here’s the lowdown from our email glossary:

DMARC stands for Domain-based Message Authentication, Reporting and Conformance. The DMARC specification allows senders and recipients to exchange email authentication to guard against online phishing and other bad practices in the messaging industry. DMARC.org is a group that was created by 15 email services providers, financial firms and message security companies in 2012. Members of the group include Google, Microsoft, Return Path and Yahoo. DMARC.org aims to create standards or email marketing best practices to combat the threats posed by phishing, spam and other abuses of email. DMARC adoption is important for marketers, as large ISPs and inbox providers such as Gmail and Yahoo are key gatekeepers to large segments of customers — if a business’ email is not DMARC compliant, its email deliverability could be adversely affected.

They say the pen is mightier than the sword, but we believe a picture says a thousand words too. To that end, we found a great infographic created by DK New Media to explain its use and how it all came about. ‘Nuff said.



  • Thanks much for sharing our infographic! The folks at DMARC were fantastic to work with.

  • We’re always happy to share good info!

  • Hi Angela,

    Thanks for such informative and useful articles.

    I seek your help on a minor but really irritating issue pertaining to DMARC.

    I have sucessfully set up DKIM and SPF. Results are pass. I have successfully added following DMARC policy to my DNS TXT Zone, “_dmarc.scanholdings.com TXT v=DMARC1; p=reject; rua=mailto:mailauth-reports@scanholdings.com”

    Still when I check my DMARC results, report shows as under:

    DMARC Results
    Domain = _dmarc.scanholdings.com
    DNS Record =
    No DMARC record found for _dmarc.scanholdings.com: NXDOMAIN

    Is it possible for you to help as I could not get any answer in help forums.

    Thanks in advance for your valuable suggestions.

    Rajiv Agarwal


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