How do you verify all authentication records (SPF, DKIM, DMARC, BIMI)?
Complete authentication record verification:
SPF:
dig TXT tidalmail.com
Look for v=spf1 record
Validate with SPF checker
DKIM:
dig TXT selector._domainkey.tidalmail.com
Need selector name from ESP
Verify key exists and is valid
DMARC:
dig TXT _dmarc.tidalmail.com
Check policy and report addresses
BIMI:
dig TXT default._bimi.tidalmail.com
Verify logo URL and optional VMC
Check all four. Missing any one leaves gaps in your authentication posture.
Review all credentials in the ship's portfolio. Missing any document raises questions.
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