To delete the DNS cache on most used Linux distributions, the commands will vary depending on the distribution and version: Ubuntu 14.04 (Trusty Tahr) Ubuntu 14.04 uses dnsmasq as the DNS resolver. To clear the DNS cache, you can restart… Continue Reading
Here’s a step-by-step guide on how to install PostfixAdmin on AlmaLinux: Step 1: Install MariaDB Database Server PostfixAdmin requires a database to store its data. We’ll use MariaDB, which is a drop-in replacement for MySQL. Step 2: Create a Database… Continue Reading
Configuring an AlmaLinux VPS server to send and receive emails when port 25 outbound is blocked for outgoing traffic and securing the server with Let’s Encrypt certificates can be achieved through the following steps: Step 1: Set Up an Alternative… Continue Reading
Changing the hostname of an AlmaLinux system is a straightforward process that can be done using either the command line or a text user interface (TUI). This guide will walk you through both methods for AlmaLinux 8 and 9. Prerequisites… Continue Reading
Changing the hostname of a Windows Server is a common administrative task that can be done using various methods. This guide will walk you through the steps to change the hostname on Windows Server 2022 and 2025 using both the… Continue Reading
Exim is a highly configurable mail transfer agent (MTA) used for sending and receiving email. This guide will provide a comprehensive walkthrough of installing and configuring Exim on AlmaLinux 9. Prerequisites Before you start, ensure you have the following: Step… Continue Reading
Pi-hole is a powerful, network-wide ad blocker that can be installed on your network to block ads, trackers, and other unwanted content. This guide will walk you through the step-by-step process of installing Pi-hole on AlmaLinux 9. Prerequisites Before you… Continue Reading
If you cannot access MariaDB root user for any of reasons, like “I forgot MariaDB password”, “I have not set the MariaDB root myself and need to reset it”, “I have installed MariaDB but no prompt asked me to set… Continue Reading
CentOS Linux 7 is scheduled to reach its end of life (EOL) on June 30, 2024. After this date, no further updates or security patches will be released for CentOS 7. If you’re currently using CentOS 7, it’s crucial to… Continue Reading
Migrating from CentOS 7 to Rocky Linux 9 is a significant step for anyone relying on a stable and secure operating system. Here’s a step-by-step guide to help you through the process: Remember to adapt the instructions to your specific… Continue Reading