ToolsEmail Security
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.
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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:
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.
Common Questions
What is SPF, DKIM, and DMARC?
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.
Why is email security important for Australian businesses?
Business Email Compromise (BEC) cost Australian businesses over $98 million in 2023 according to the ACCC. Proper email authentication prevents attackers from impersonating your domain, protecting your brand reputation and preventing financial fraud.
How do I fix email security issues?
Email security issues are fixed by adding or correcting DNS records for your domain. SPF requires a TXT record listing authorised mail servers. DKIM requires public key records. DMARC requires a policy record. Our tool shows exactly what records you need to add.