Here are some tools to improve your website, your mail server and/or your dns server.
Here is how to lock you /etc/resolv.conf in Openwrt
Purism post-mortem about their 2018 dns outage reminds us the infamous dependance with registry and registrars.
The ultimate DNS guide. How to set it up, how to maintain it, how to have a modern stack. Deploying DNSSEC and DANE.
Enhancing your TLS stack thanks to this new dns record.
How to dynamically update your DNS records without editing the zone file. Locally or remotely.