Show HN: Domain DMARC Checker

Category: devtools

Tags: dns, email-security, dmarc

Score: 5.0/10 (Innovation: 4, Technical: 5, Documentation: 7, Utility: 6)

This project is a web-based tool for checking DNS records related to email security, such as DMARC, SPF, and DKIM. It queries public DNS and provides a detailed analysis of syntax, policy strength, and misconfigurations. Its practical value lies in helping domain owners improve email deliverability and prevent spoofing, though it is not a novel paradigm.

Target audience: backend devs, devops

Repository: https://dmarcdefender.io/tools/domain-check

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