How can DNSSEC affect DKIM verification?

DNSSEC and DKIM interaction:

Protection benefit:

DNSSEC ensures DKIM public key is authentic

Prevents attacker from publishing fake key

Receiver can trust the public key

Failure risk:

If DNSSEC is broken, DKIM record lookup fails (SERVFAIL)

No key available = DKIM verification fails

DMARC sees DKIM failure

Practical impact:

Most receivers do not require DNSSEC for DKIM

But validating resolvers will fail if DNSSEC is misconfigured

Recommendation:

If using DNSSEC, maintain it properly

Monitor DNSSEC health alongside authentication

If your seal system is broken, even legitimate documents cannot be verified.