DNS Security Scanner
Scan DNS records for email security configurations including SPF, DKIM, DMARC, MX records, and more. Ensure your domain is protected against email spoofing.
Enter a domain name without http:// or www
What We Check
SPF
Specifies which servers can send email for your domain
DMARC
Policy for handling failed authentication
Why Scan DNS Security?
Properly configured DNS records protect your domain from email spoofing and phishing attacks. SPF, DKIM, and DMARC work together to authenticate email and protect your brand.
Frequently Asked Questions
What is SPF?
Sender Policy Framework (SPF) specifies which mail servers are authorized to send email for your domain, preventing spoofing.
What is DKIM?
DomainKeys Identified Mail (DKIM) adds a digital signature to emails, allowing recipients to verify the message wasn't altered in transit.
What is DMARC?
Domain-based Message Authentication, Reporting & Conformance (DMARC) tells receivers how to handle emails that fail SPF or DKIM checks.
Why are all three needed?
SPF, DKIM, and DMARC complement each other. Together they provide comprehensive email authentication and deliverability.