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DNS Security Auditor

DNS and email security audit tool for DMARC, SPF, DKIM, and more

Securitydnsemail-securitydmarcspfdkimdnssecopen-source
DNS Security Auditor screenshot

About

DNS Security Auditor is a free, open-source tool that analyzes a domain's email authentication and DNS security configuration. It checks standards like DMARC, SPF, DKIM, MX, MTA-STS, TLS-RPT, BIMI, DNSSEC, and CAA, then reports findings and suggested fixes. No account or data storage is required to use it.

Problem

Misconfigured DNS and email authentication records leave domains vulnerable to spoofing, phishing, and deliverability issues.

For

system administrators, developers, and security professionals managing domain DNS configurations

How it works

Users enter a domain and the tool resolves its DNS records, validates them against known standards, and outputs a report of passing checks, warnings, and issues with remediation guidance.

Business model

free

Status

launched

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