Free SPF, DMARC & DKIM Checker
Validate your email security configuration. Find misconfigurations that allow email spoofing and phishing from your domain.
Email security trio: SPF, DKIM, DMARC
SPF
Sender Policy Framework
A DNS TXT record that lists which mail servers are authorized to send email for your domain. Prevents forged sender addresses.
DKIM
DomainKeys Identified Mail
Adds a cryptographic signature to outgoing emails. Receiving servers verify the signature to confirm the email wasn't tampered with in transit.
DMARC
Domain-based Message Authentication
Builds on SPF and DKIM to tell receiving servers what to do with emails that fail authentication: none (monitor), quarantine, or reject.