Published onApril 5, 2026ACME DNS: Why It’s Essential for Secure Automated SSL/TLSacme-protocoldns-01-challengessl-tls-certificateslets-encryptweb-securitywildcard-certificatesThe ACME DNS protocol automates SSL/TLS certificate issuance via DNS-01 challenges. This guide explains how to secure domains and wildcards without public ports.