Email authentication

Mail Check Send a real email to a one-time address and have SPF, DKIM, DMARC and blocklists checked against the actual delivery. SPF Check Find the SPF record, check its syntax, count DNS lookups against the limit of 10. DMARC Analyzer Read the DMARC record and assess policy, alignment and reporting addresses. DKIM Lookup Query the DKIM public key, check the real key length and the record status. MTA-STS and TLS-RPT Check Check the MTA-STS record and HTTPS policy, MX comparison, certificate, TLS-RPT. DANE Check Check the TLSA records of the MX hosts: DNSSEC, Usage/Selector/Matching, coverage. BIMI Check Check a domain's BIMI record: logo URL, SVG profile, VMC and the DMARC precondition.