DMARC Checker

Check a DMARC policy, reporting addresses, and SPF or DKIM alignment settings.

What is DMARC Checker?

DMARC Checker is an online analysis tool for checking a domain’s DMARC policy, reporting preferences, and SPF or DKIM alignment approach. It helps you reach the right data quickly when domain, IP, email, or certificate infrastructure changes.

This page provides a clear definition, usage steps, and interpretation guide. Results can depend on DNS caches, registry privacy, CDNs, network timeouts, and remote service availability. Confirm critical changes with an authoritative provider or more than one resolver.

How does it work?

The request is sent to the appropriate technical source for the input type. The result may include the _dmarc TXT record, policy, aggregate and forensic reporting targets, percentage, and alignment settings. Always evaluate the returned value together with its source, timestamp, record type, and intended configuration.

How to use it

Open the tool above and enter the target. Example: ornekalanadi.com.
Check the input format and submit the request.
Compare dates, hostnames, priorities, policies, and returned values with the expected configuration.
If you make a correction, wait for the relevant cache or TTL and test again.

How to interpret the results

A technically valid response is not automatically a correct configuration. Investigate unexpected hosts, expired or nearly expired certificates, incorrect IP addresses, missing authorization, and inconsistent DNS records. Back up the current configuration before changing production systems.

Frequently asked questions

What is DMARC?

DMARC combines SPF and DKIM results with domain alignment and tells receivers which policy to apply.

What does p=none do?

It enables reporting without requesting quarantine or rejection.

Should DMARC start at p=reject?

Monitor reports first, verify legitimate senders, and tighten the policy gradually.