Learn how to override the default DNS server on Ubuntu using systemd-resolved, so you can quickly mitigate DNS resolution failures without waiting on your hosting provider.

If you send email from a Postfix mail server, configuring OpenDKIM is necessary to authenticate your domain. Without it, email providers like Gmail and Yahoo will junk or reject your emails. Here’s how to set it up.

It is the responsibility of web developers to understand how their code is impacting the server environment. Here are a few essential commands to gauage your impact.

This tutorial covers the bare minimum configuration and hardening you should apply to any new Ubuntu server.

This tutorial shows you how to configure Apache to run as a Subversion server on the Ubuntu Linux operating system.