SPF, DKIM & DMARC Checker
Verify email authentication records for any domain. Protect against spoofing and improve deliverability.
What are SPF, DKIM, and DMARC?
These three DNS records form the foundation of email authentication. They work together to prevent email spoofing and improve deliverability.
SPF (Sender Policy Framework)
Lists which IP addresses and servers are allowed to send email for your domain.
DKIM (DomainKeys Identified Mail)
Adds a digital signature to outgoing emails so recipients can verify the message wasn't altered.
DMARC (Domain-based Message Authentication)
Tells receiving servers what to do when SPF or DKIM checks fail — reject, quarantine, or allow.