Email authentication
3.43.103.214 email authentication
Combined SPF, DMARC, and DKIM validation for this domain.
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- SPF ValidatorSame targetValidate SPF TXT records, mechanisms and terminal all3.43.103.214Open
- DMARC AnalyzerSame targetDMARC policy, alignment and reporting checks3.43.103.214Open
- DKIM ValidatorSame targetDKIM selector lookup and record validation3.43.103.214Open
- DNS CheckerSame targetAll major record types in one pass3.43.103.214Open
- DIGSame targetOne record type, resolver-style answer3.43.103.214Open
- Domain IP LookupSame targetA and AAAA IP addresses for a domain3.43.103.214Open
- Domain Age CheckerSame targetCreation date, age, registrar and expiry3.43.103.214Open
- WHOISSame targetRegistrar, expiry and domain status3.43.103.214Open
- HTTP Header CheckerSame targetResponse headers, redirects and caching3.43.103.214Open
- HTTP/2 TesterSame targetHTTP/2 support, ALPN and TLS negotiation3.43.103.214Open
- SSL Certificate CheckerSame targetCertificate chain, SAN and TLS version3.43.103.214Open
- Blacklist CheckerSame targetDNSBL reputation for IP and domain3.43.103.214Open
- Punycode ConverterSame targetUnicode ↔ Punycode for IDN domains3.43.103.214Open
- URL SplitterSame targetBreak a URL into parts and query paramshttps://3.43.103.214/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
- BIN CheckerCard brand, bank and country from BIN/IINOpen
- IP CalculatorSame targetSubnet math for IPv4 and IPv6 CIDR3.43.103.214Open
- Browser Update CheckerBrowser version, update status and Client HintsOpen
Guides
Related articles
Practical guides for common Email Auth Checker tasks — DNS records, troubleshooting steps, and links to our free tools.
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SPF, DKIM, and DMARC together
SPF, DKIM, and DMARC together. Email Auth Checker runs SPF at the domain apex, DMARC at _dmarc.<domain>, and DKIM for each selector you provide in one coordinated report. Shareable result URLs keep domain and optional selectors in the query string so support teams can reopen the same audit without retyping.
Read article →combined email auth audit, email auth checker, spf dkim dmarc
Combined email authentication audit
Combined email authentication audit. Email Auth Checker runs SPF at the domain apex, DMARC at _dmarc.<domain>, and DKIM for each selector you provide in one coordinated report. Shareable result URLs keep domain and optional selectors in the query string so support teams can reopen the same audit without retyping.
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DKIM selector workflow in one run
DKIM selector workflow in one run. Email Auth Checker runs SPF at the domain apex, DMARC at _dmarc.<domain>, and DKIM for each selector you provide in one coordinated report. Shareable result URLs keep domain and optional selectors in the query string so support teams can reopen the same audit without retyping.
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DMARC readiness before enforcement
DMARC readiness before enforcement. Email Auth Checker runs SPF at the domain apex, DMARC at _dmarc.<domain>, and DKIM for each selector you provide in one coordinated report. Shareable result URLs keep domain and optional selectors in the query string so support teams can reopen the same audit without retyping.
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Reading the email auth summary score
Reading the email auth summary score. Email Auth Checker runs SPF at the domain apex, DMARC at _dmarc.<domain>, and DKIM for each selector you provide in one coordinated report. Shareable result URLs keep domain and optional selectors in the query string so support teams can reopen the same audit without retyping.
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Shareable email auth checker result pages
Shareable email auth checker result pages. Email Auth Checker runs SPF at the domain apex, DMARC at _dmarc.<domain>, and DKIM for each selector you provide in one coordinated report. Shareable result URLs keep domain and optional selectors in the query string so support teams can reopen the same audit without retyping.
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