Email Tools

DMARC Checker

Check a domain's DMARC policy and reporting settings.

Not sure what to enter? Try an example: gmail.com

Free & instant No signup How to use FAQ

Enter a domain to read its DMARC record and see how it tells receivers to treat email that fails SPF and DKIM.

What is DMARC?

DMARC is a TXT record at _dmarc.yourdomain that tells receiving servers what to do with mail that fails SPF and DKIM - nothing (p=none), send it to spam (p=quarantine) or reject it (p=reject) - and where to send reports. Gmail and Yahoo now require DMARC for bulk senders.

How to check a domain's DMARC policy

Enter the domain in the box above.
Click Check DMARC.
Read the policy (p=) and the reporting address (rua=).
Start with p=none to collect reports, then move to quarantine and reject once legitimate mail passes.

Related checks

To create a DMARC record, use the DMARC Record Generator.
For SPF, DKIM, DMARC and MX in one report, use the Email Security Summary.

Start at p=none with reporting turned on, read the reports for a few weeks, then move to quarantine and finally reject. JustChecker tracks your DMARC record so you can see when each step went live.

Frequently Asked Questions

p=none with a rua reporting address. Read the reports for a few weeks, fix any legitimate senders that fail, then move to quarantine and finally reject.

Gmail and Yahoo require a DMARC record from anyone sending bulk email, and it makes spoofing your domain much harder for everyone else.

Daily summaries from receiving mail providers listing which servers sent email as your domain and whether they passed. They show forgotten senders and spoofing attempts.

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