Set up and verify SPF, DKIM, and DMARC records

1-2 hr Impact: high ✓ Manual completion — a permanent stone

SPF, DKIM, and DMARC together form your domain's complete email authentication stack — verifying all three are correctly set up and working confirms your domain is protected against spoofing and that your legitimate email actually reaches inboxes instead of getting caught in spam filters.

This is foundational trust infrastructure for your entire domain, not just marketing email — a domain without proper email authentication is more vulnerable to impersonation and has real deliverability problems.

The full picture

SPF, DKIM, and DMARC verification here confirms comprehensive, properly functioning email authentication across your complete sending infrastructure — extending the individual implementation work discussed extensively in earlier email security missions with genuine, comprehensive confirmation that all three protections are properly configured and actively functioning together.

This comprehensive verification matters given how these three protections work together as a complete system — genuine confirmation that all three are properly configured and mutually consistent provides considerably stronger assurance than verifying each individually, since gaps in how these protections interact can undermine the complete protection this comprehensive system is meant to provide.

This represents foundational email trust infrastructure that supports both your deliverability and your broader brand security — comprehensive, properly functioning email authentication protects against spoofing while also supporting genuine deliverability for your legitimate email communications across every sending source you actually use.

This verification deserves periodic repetition, particularly following any changes to your email infrastructure or sending tools, ensuring this comprehensive protection remains genuinely intact as your actual sending ecosystem evolves rather than assuming initial proper configuration automatically persists indefinitely without ongoing verification.

How to do it

1

Verify SPF is correctly configured

Lists every legitimate service authorized to send email as your domain.
2

Verify DKIM is signing correctly

Cryptographically proves outgoing email genuinely came from you.
3

Verify DMARC is at meaningful enforcement

Not just present, but actually set to quarantine or reject after a monitoring period, with reports being reviewed.
4

Test end to end

Send a real test email and check the authentication results in the received headers.

Common mistakes

This exact combination overlaps significantly with your Hardening Ring's email deliverability checks — this Legacy Ring mission may largely already be satisfied if those are passing.