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Summary OpenBSD’s acme-client acme-client is the default Automatic Certificate Management Environment (ACME) client on OpenBSD, installed at the same time when the OS is. ...

This post is about: # smtpd -dv -Tlookup I wrote about how to debug rcctl and find why an error occurs in OpenBSD last year: ...

Intro Let’s Encrypt is “a free, automated, and open Certificate Authority”. Certbot is “an easy-to-use automatic client that fetches and deploys SSL/TLS certificates for your web server”, well known as “the official Let’s Encrypt client”. ...