A free, open-source tool for comprehensive DNS and email security auditing, checking critical configurations like DMARC, SPF, and DNSSEC.
DNS Security Auditor
A free, open-source tool for comprehensive DNS and email security auditing, checking critical configurations like DMARC, SPF, and DNSSEC.
Discovery signals rise when people search, view, like, share, claim, or collect this card.
What it does
DNS Security Auditor provides a thorough analysis of a domain's email authentication and DNS security configuration. It checks vital records like DMARC, SPF, DKIM, MX, MTA-STS, TLS-RPT, BIMI, DNSSEC, and CAA to identify potential vulnerabilities. The tool generates detailed reports, including DMARCbis readiness and DNSSEC validation, helping users understand findings and implement necessary fixes. Notably, it emphasizes privacy with no data storage or account requirements, operating as a free and open-source solution.
Who it helps
System administrators, IT professionals, and developers responsible for managing domain and email infrastructure will find this tool invaluable. It's also useful for small businesses and organizations seeking to enhance their email deliverability and protect against spoofing and phishing attacks.
Why it's interesting
This project stands out as a well-executed, free, and open-source utility addressing a critical and often overlooked aspect of online security. Its commitment to privacy, by not storing data or requiring accounts, builds trust. The comprehensive scope of its audits makes it a valuable resource for anyone looking to improve their domain's security posture.
Card stats
AI-assisted scores estimated from public website information only.
FounderDeck estimate
Medium confidenceThis FounderDeck estimate of $75,000 reflects a highly functional, polished, and privacy-focused tool that solves a real security problem. The v2.0.0 and comprehensive checks demonstrate strong execution and utility. However, the explicit 'free, open-source' and 'no data stored, no account' model means there is no visible direct monetization path, limiting its current valuation as a commercial startup. It holds significant value as a community resource or a strong personal project.
Valuation date: 2026-06-05. Estimate generated from public signals.
Collectors
Collected by 0 people.
Collected cards are saved profile cards. They do not represent ownership, equity, investment rights, IP rights, or affiliation.
Is this your startup?
Claim the official card to correct details, add founder-approved info, and show the Founder Verified badge. Claiming does not remove people's collected copies — it verifies the official company profile.
Claim official card