Domain Security Checker
Comprehensive email security analysis with 15+ checks. Get an instant grade and actionable recommendations.
15+ Security Checks Including
What We Check
DMARC
Policy, reporting, and alignment settings
SPF
Authorized senders and policy enforcement
DKIM
Signature verification with common selectors
MTA-STS
Transport security policy for inbound mail
MX Records
Mail server configuration and health
DNSSEC
DNS Security Extensions validation
Want continuous monitoring?
A one-time check is a good start. DDMARC provides continuous monitoring, automated alerts, and guided remediation to keep your domain secure.
More free tools
DMARC Report Analyzer
Paste or upload a DMARC aggregate (RUA) report and see total volume, pass/fail rates, and which senders are failing. Runs in your browser.
Use ToolDMARC Record Generator
Create a valid DMARC record for your domain. Configure policy, reporting emails, and advanced options.
Use ToolSPF Record Generator
Build an SPF record to authorize your email senders. Includes common services and DNS lookup counter.
Use ToolDMARC Record Lookup
Look up any domain's DMARC record and get every tag explained — policy, alignment, reporting, and coverage.
Use ToolDKIM Record Checker
Check a domain's DKIM record by selector. See the key type, size, and each tag, with quick-picks for common providers.
Use ToolMTA-STS & TLS-RPT Checker
Check a domain's MTA-STS policy record and TLS-RPT reporting — the pair that forces inbound mail over TLS.
Use ToolBIMI Record Checker
Look up a domain's BIMI record, preview the logo, and confirm the VMC and DMARC enforcement it requires.
Use Tool