Why DMARC matters for you
DMARC ties SPF and DKIM together and tells receiving servers what to do when a message fails authentication — monitor it, quarantine it, or reject it. It’s the record that actually stops attackers from spoofing your domain to phish your customers and partners.
Since 2024, Google and Yahoo require a DMARC record for bulk senders. No DMARC increasingly means worse inbox placement and zero protection against someone impersonating your brand in your customers’ inboxes.
How DMARC quietly breaks
The most common state is a policy stuck at p=none — it monitors but blocks nothing, so you have a DMARC record that provides no real protection at all. Plenty of teams set it up, see “DMARC: present,” and never move past monitoring.
The silent killer is duplicate records. If more than one _dmarc TXT record exists — a registrar auto-publishes one, then you or a tool adds another — receivers ignore DMARC entirely under RFC 7489. You believe you’re protected, and you’re not.
Two _dmarc records = DMARC ignored entirely (RFC 7489). You think you’re protected. You’re not.
How Zeqo works for you
This checker validates your policy strength, flags the duplicate-record trap, and hands you the exact TXT record to publish — starting safely at monitoring and showing you how to ratchet up to enforcement once SPF and DKIM are confirmed working.
Zeqo Mail watches your DMARC record every day, so if it gets duplicated, weakened, or removed, you know immediately rather than months later.
It checks your policy alongside SPF and DKIM, so you can see at a glance whether your authentication stack still holds together — and exactly what to change when it doesn’t.