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About the DMARC Checker

Read a domain's DMARC policy: whether failures are monitored, quarantined or rejected, where reports are sent, and how strictly alignment is enforced.

• Policy level, percentage and alignment settings
• Reporting addresses for aggregate and forensic reports
• Syntax validation with clear explanations

Frequently asked questions

What DMARC policy should I start with?

Start at p=none with a reporting address. That monitors without affecting delivery, so you can find legitimate senders before moving to quarantine and then reject.

Do I need SPF and DKIM for DMARC to work?

Yes. DMARC builds on both, and requires that at least one passes and aligns with the visible From domain.

Related tools

• DNS LookupLook up DNS records for any domain: A, AAAA, MX, TXT, CNAME, NS, SOA and more. DNS lookup with instant results.
• TXT Record LookupLook up TXT records for any domain, including SPF, DKIM, DMARC and site verification strings. Instant DNS TXT checker.
• SPF Record CheckerCheck and validate a domain's SPF record. See which servers may send mail, catch syntax errors and count DNS lookups. Instant.
• Blacklist CheckerCheck whether an IPv4 address or a domain is listed on major email blacklists and RBLs, with the reason and a delisting link. Find out why mail is rejected.
• DKIM Record LookupLook up and validate DKIM records by selector. Confirm your signing key is published correctly for email authentication. Instant.
• Domain & IP LookupLook up everything about a domain or IP in one go: DNS records, Whois, geolocation, SSL and HTTP headers. Instant, no signup.

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