Letsencrypt

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”.