All free tools

Check your domain’s DMARC.

See what your domain asks email providers to do with messages that fail authentication.

Free. No account required.

Checks public DNS using Google Public DNS. Google receives the queried names and your IP address. Nothing is changed. How your data is handled.

About this check

What this checks

Your published policy, reporting destinations and common record errors. If your domain has no record, the checker looks for a parent policy using the current DMARC discovery rules.

DNS settings describe your policy. To see what happened to a particular email, use the header analyser.