DNS & Email Trust
high Severity
Free Check
DNSSEC Validation & Signatures
Validates Domain Name System Security Extensions (DNSSEC) to prevent DNS spoofing and cache poisoning attacks.
Why It Matters
Without DNSSEC, attackers can poison recursive DNS resolvers to silently divert your web traffic to malicious replica servers.
How We Check This
We send a DNS query with the DNSSEC OK (DO) flag and check for valid RRSIG and DS records.
How to Fix & Implement
Copy-paste configuration blocks tailored for your web server or edge proxy.
nginx snippet
# Enable DNSSEC in your domain registrar (e.g., Namecheap, GoDaddy) using DS records provided by your DNS host
Frequently Asked Questions
Does DNSSEC encrypt DNS queries?
No. DNSSEC provides cryptographic authentication and integrity of DNS responses, not privacy/encryption (which is handled by DoH/DoT).