Learned Geek Blog

You set up SSL automation once and it worked great. Then you added a new domain and hit every gotcha you'd forgotten about. Here's the checklist.

A programmer's guide to SPF, DKIM, and DMARC - why email authentication exists and how to configure it when your DNS lives in Cloudflare.

Setting up free, automated SSL certificates for multiple domains using a Raspberry Pi, Certbot, and Cloudflare DNS.