Server Management

In this post, we’re going to take a look at a vital part of the email system, called the Mail Transfer Agent, sometimes referred to as “mail delivery agent” or even “mail transport agent“. We will discuss what the mail transfer agent is, the advantages of using the mail transfer agent, and finally take a …

PHP and SQL are two of the most commonly used tools in web development. PHP is a server-side scripting language that is used to create dynamic web pages, while SQL is a database management system that is used to store and retrieve data. You don’t need to be a Linux expert to manage your servers …

When it comes to monitoring system resources on Linux, htop has been the go-to tool for many administrators and developers alike. Its simple interface and real-time metrics have made it a staple in the toolkit of those who prefer a comprehensive overview of their system’s performance. You might already know about htop, a great tool …

When managing your servers, you will often need to use the Secure Shell (SSH) protocol, but sometimes you might see a “Connection Refused” message. If so, then don’t worry, because in this post we will explain five ways to fix the SSH connection refused error – as well as answering some of the frequently asked …

Are you tired of seeing the DNS_PROBE_FINISHED_NXDOMAIN error appear when you’re just trying to surf the web? In this post, we will share helpful tips for troubleshooting the DNS_PROBE_FINISHED_NXDOMAIN error and discuss some easy fixes. But first, let’s learn more about this cryptic error and why it occurs. What is the DNS_PROBE_FINISHED_NXDOMAIN Error? The DNS_PROBE_FINISHED_NXDOMAIN …

If you’ve ever used a command line interface to access a computer, then you may have noticed a name at the start of each line – the system hostname: Have you ever wondered what it is, and why it’s there? If so then you’re in the right place. In this post, you will learn everything …

In this article we’ll be explaining what these terms mean, why they’re important, and answering a common question – how to list Linux users and groups in Ubuntu with the command prompt. It doesn’t take long once you’ve dived into Linux systems before you encounter words such as ‘root’ and ‘sudo’, which aren’t at first …

Redis has long been one of the most admired in-memory databases – fast, flexible, and widely adopted across modern applications. In 2024, however, the company behind Redis moved the project away from its long-standing open source roots, triggering widespread concern in the developer community and sparking forks like Valkey. In May 2025, Redis reversed course. …

Out of the top one million websites globally, 293,000 are powered by WordPress. And with 500+ new WordPress sites built every single day, it’s fair to say it’s a popular choice as a CMS. In fact, as of July 2023, WordPress holds a 64.2% market share of CMS sites. One of the factors that makes …