Email Security Checker - SPF, DKIM, DMARC
Check your domain's email security configuration for free. Validate SPF, DKIM and DMARC records to protect against phishing and email compromise.
- SPF record validation
- DKIM signature check
- DMARC policy analysis
- Security score rating
- Actionable recommendations
Check Your Domain's Email Security
Enter your domain name to analyse your SPF, DKIM, and DMARC configurations.
This tool performs DNS lookups to check your domain's email authentication records. No data is stored or shared.
Try These Example Domains
See how major companies configure their email security:
01How it works
Understanding Email Authentication
SPF
Specifies who can send email for your domain.
DKIM
Adds a digital signature to verify sender identity.
DMARC
Tells servers what to do with failed emails.
04FAQ
Frequently asked questions
SPF (Sender Policy Framework) specifies which servers can send email for your domain. DKIM (DomainKeys Identified Mail) adds a digital signature to verify email authenticity. DMARC (Domain-based Message Authentication) tells receiving servers how to handle emails that fail SPF/DKIM checks. Together, they protect against email spoofing and phishing.
Free audit
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