Email DNS & Authentication
Live SPF, DMARC, DKIM, MTA-STS, TLS-RPT and BIMI record checks for email-domain setup. 25 tools are currently live in this section.
SPF Record Checker
Find the SPF TXT policy published for a domain.
Open tool →SPF Mechanism Count
Count mechanisms and modifiers in a published SPF policy.
Open tool →SPF Include Count
Count include: mechanisms in a published SPF record.
Open tool →SPF All Policy Checker
Identify whether an SPF record ends with -all, ~all, ?all or +all.
Open tool →Multiple SPF Record Check
Detect domains publishing more than one SPF record.
Open tool →DMARC Record Checker
Look up the _dmarc TXT policy for a domain.
Open tool →DMARC Policy Checker
Extract the p= policy from a DMARC record.
Open tool →DMARC Subdomain Policy
Extract the sp= subdomain policy from DMARC.
Open tool →DMARC Percentage Checker
Extract the pct= rollout percentage from DMARC.
Open tool →DMARC Aggregate Report URI
Extract rua= aggregate-report destinations from DMARC.
Open tool →DMARC Failure Report URI
Extract ruf= failure-report destinations from DMARC.
Open tool →DMARC Alignment Checker
Show adkim and aspf alignment modes from a DMARC record.
Open tool →DMARC Presence Check
Quickly confirm whether a valid-looking DMARC TXT record exists.
Open tool →DKIM Record Checker
Look up a DKIM selector at selector._domainkey.domain.
Open tool →DKIM Key Type Checker
Extract the k= key type from a DKIM TXT record.
Open tool →DKIM Public Key Presence
Check whether the DKIM record contains a non-empty p= public key.
Open tool →MTA-STS TXT Checker
Look up the _mta-sts TXT record for a mail domain.
Open tool →MTA-STS ID Checker
Extract the id= value from a published MTA-STS TXT record.
Open tool →TLS-RPT Record Checker
Look up SMTP TLS reporting policy at _smtp._tls.domain.
Open tool →TLS-RPT Report URI
Extract rua= reporting destinations from TLS-RPT.
Open tool →BIMI Record Checker
Look up the default._bimi TXT record for a domain.
Open tool →BIMI Logo URI Checker
Extract the l= logo location from a BIMI record.
Open tool →BIMI Authority URI Checker
Extract the a= authority/VMC location from BIMI.
Open tool →Mail Host Summary
Summarize a domain MX hosts, priorities and resolved addresses.
Open tool →Email DNS Health Summary
Summarize MX, SPF, DMARC, MTA-STS, TLS-RPT and BIMI presence.
Open tool →About Email DNS & Authentication
Live SPF, DMARC, DKIM, MTA-STS, TLS-RPT and BIMI record checks for email-domain setup. MediaZuno groups closely related utilities together so you can move between tasks without hunting across different websites.