How do you verify all authentication records (SPF, DKIM, DMARC, BIMI)?
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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