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Article · Email security · Linked to scan findings

What is DMARC — and why does your domain probably not have it?

6 min read ASD Essential Eight aligned Reviewed by Ben Webster

Published by CertIQ · Essential Eight article · Email hygiene


If CertIQ flagged your email configuration as a finding, DMARC is almost certainly part of the reason. It is one of the most commonly missing email security controls in Australian SME domains — and one of the most consequential.

This article explains what DMARC is, what it protects against, and how to fix it in an afternoon.


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