Show HN: NIS2 Readiness Check (opens in new tab)

Check your domain against the NIS2 Article 21 email-authentication controls. NIS2 is in force EU-wide (transposition deadline was 17 Oct 2024) and national enforcement is rolling out — Germany's NIS2UmsuCG went live 6 Dec 2025. Maps DMARC, SPF, MTA-STS, TLS-RPT, and DNSSEC to the specific paragraphs auditors reference.