What Is the Email Authentication Analyzer?
The Email Authentication Analyzer is a DNS security tool that evaluates SPF, DMARC, DKIM, and MX records to assess a domain’s email trust and deliverability posture.
Why Email Authentication Matters
Proper email authentication helps prevent spoofing, phishing, and impersonation while improving inbox placement and reducing rejection or spam-folder issues.
Who Should Use This Tool?
This tool is ideal for system administrators, security teams, email deliverability specialists, domain owners, and IT operators managing business email infrastructure.
How to Analyze a Domain’s Email Setup
Enter the domain, optionally add a DKIM selector, choose a resolver, and run the check to retrieve and interpret authentication-related DNS records.
SPF Record Parsing and Policy Review
The analyzer inspects SPF mechanisms like include, a, mx, ip4, ip6, and redirect, then summarizes effective sender policy behavior.
DMARC Policy Breakdown and Reporting Fields
DMARC output is parsed into key directives such as p, sp, pct, alignment settings, and reporting URIs (rua, ruf) for policy validation.
DKIM Lookup with Optional Selector Input
Provide a selector to fetch DKIM TXT records and verify that public keys are published correctly for cryptographic message signing integrity checks.
MX Record Visibility for Mail Routing
MX results show which servers receive mail for the domain, helping confirm routing configuration and identify potential delivery misalignment.
Best Use Cases for Security and Deliverability
Use this tool for onboarding audits, anti-phishing hardening, incident response, domain hygiene reviews, and troubleshooting failed authentication checks.
Benefits for Trust, Security, and Inbox Performance
Regular authentication analysis strengthens domain reputation, reduces abuse risk, and supports more reliable, secure email delivery at scale.
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