Authentication Troubleshooting
SPF PermError
Evidence-first diagnosis and recovery.
Unexpected SPF Softfail
Evidence-first diagnosis and recovery.
SPF Lookup Limit Exceeded
Evidence-first diagnosis and recovery.
Missing DKIM Signature
Evidence-first diagnosis and recovery.
DKIM Public Key Not Found
Evidence-first diagnosis and recovery.
DKIM Body Hash Mismatch
Evidence-first diagnosis and recovery.
DKIM Signature Verification Failure
Evidence-first diagnosis and recovery.
DMARC Failure
Evidence-first diagnosis and recovery.
Unexpected DMARC Reject
Evidence-first diagnosis and recovery.
Identifier Alignment Failure
Evidence-first diagnosis and recovery.
Missing PTR Record
Evidence-first diagnosis and recovery.
PTR and HELO Mismatch
Evidence-first diagnosis and recovery.
Stale DNS After Change
Evidence-first diagnosis and recovery.
DNS SERVFAIL
Evidence-first diagnosis and recovery.
DNSSEC Bogus Validation
Evidence-first diagnosis and recovery.
MTA-STS Policy Fetch Failure
Evidence-first diagnosis and recovery.
Missing TLS-RPT Reports
Evidence-first diagnosis and recovery.
BIMI Logo Not Displayed
Evidence-first diagnosis and recovery.
DKIM CNAME Loop
Evidence-first diagnosis and recovery.
DKIM Selector Collision
Evidence-first diagnosis and recovery.