Email authentication

dn01.ink DMARC analysis

Cached DMARC policy and reporting analysis for this domain.

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DMARC analysis

No DMARC record found

Invalid DMARC record

Policy

none

Subdomain policy

Alignment

{}

Enforcement percentage

100

DMARC record

Errors

no DMARC record found at _dmarc.dn01.ink

Recommendations

publish a TXT record at _dmarc.dn01.ink starting with v=DMARC1

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Email Auth CheckerSame targetRun SPF, DMARC, and DKIM checks in one auditdn01.inkOpen
SPF ValidatorSame targetValidate SPF TXT records, mechanisms and terminal alldn01.inkOpen
DKIM ValidatorSame targetDKIM selector lookup and record validationdn01.inkOpen
DNS CheckerSame targetAll major record types in one passdn01.inkOpen
DIGSame targetOne record type, resolver-style answerdn01.inkOpen
Domain IP LookupSame targetA and AAAA IP addresses for a domaindn01.inkOpen
Domain Age CheckerSame targetCreation date, age, registrar and expirydn01.inkOpen
WHOISSame targetRegistrar, expiry and domain statusdn01.inkOpen
HTTP Header CheckerSame targetResponse headers, redirects and cachingdn01.inkOpen
HTTP/2 TesterSame targetHTTP/2 support, ALPN and TLS negotiationdn01.inkOpen
SSL Certificate CheckerSame targetCertificate chain, SAN and TLS versiondn01.inkOpen
Blacklist CheckerSame targetDNSBL reputation for IP and domaindn01.inkOpen
Punycode ConverterSame targetUnicode ↔ Punycode for IDN domainsdn01.inkOpen
URL SplitterSame targetBreak a URL into parts and query paramshttps://dn01.ink/Open
Base64 CodecEncode and decode Base64 textOpen
Password GeneratorStrong random passwords for ops workOpen
Password Strength CheckerEntropy, crack time and password suggestionsOpen
Passphrase GeneratorMemorable random word phrases for safer sharing testsOpen
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Guides

Practical guides for common DMARC Analyzer tasks — DNS records, troubleshooting steps, and links to our free tools.

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DMARC Policy Explained: none, quarantine, reject
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DMARC Alignment with SPF and DKIM
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DMARC Record Tags and Syntax Operators Should Know
Decode v=DMARC1, p=, sp=, pct=, rua, ruf, fo, aspf, adkim, and common formatting mistakes in TXT records.
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DMARC Aggregate and Forensic Reports: rua and ruf
How to publish rua and ruf mailto targets, what reports contain, and why forensic reports are often disabled.
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DMARC Subdomain Policy sp= for Marketing and Product Hosts
When sp= matters for mail.example.com, how it inherits from p=, and why separate subdomain senders need explicit alignment.
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Moving DMARC from p=none to quarantine or reject Safely
A staged rollout using reports, pct= sampling, and alignment fixes before full spoofing protection.
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DMARC analysis

Invalid DMARC record

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Related articles

DMARC Policy Explained: none, quarantine, reject

DMARC Alignment with SPF and DKIM

DMARC Record Tags and Syntax Operators Should Know

DMARC Aggregate and Forensic Reports: rua and ruf

DMARC Subdomain Policy sp= for Marketing and Product Hosts

Moving DMARC from p=none to quarantine or reject Safely