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Building Your Own Mail Server with Postfix and Dovecot on Ubuntu 22.04: Take Full Control of Your Mail Flow

By admin July 25, 2026

Set up a professional Mail Server with Dovecot and Postfix on Ubuntu 22.04. Detailed guide on configuring IMAP/POP3, SSL security, and tips to avoid spam filters.

Centos

CentOS 7 to AlmaLinux/Rocky Linux Upgrade Guide using ELevate: Fast, Efficient, No Reinstall Needed

By admin July 25, 2026

Stop wasting hours reinstalling servers now that CentOS 7 is EOL. This guide shows you how to use ELevate for a safe and fast in-place upgrade to AlmaLinux or Rocky Linux.

VMware

Eliminate ‘Noisy Neighbor’ Issues with VMware SIOC: Protecting Bandwidth for Critical VMs

By admin July 25, 2026

No more Noisy Neighbor headaches! A detailed guide on configuring VMware vSphere SIOC to protect IOPS for critical VMs like SQL and ERP, based on real-world experience.

Virtualization

Handling IOMMU Groups with ACS Override Patch: The Ultimate GPU Passthrough Trick for Budget Motherboards

By admin July 25, 2026

A detailed guide on splitting IOMMU Groups using the ACS Override Patch on Linux. A solution for successful GPU Passthrough on consumer-grade motherboards.

Ubuntu

Optimizing PHP 8.3 on Ubuntu 24.04: Don’t Let Your Server Run Like a Snail

By admin July 25, 2026

Don't settle for default PHP! Here is a detailed guide to installing PHP 8.3, PHP-FPM, and optimizing OPcache to help your Ubuntu 24.04 server handle traffic better, reduce lag, and improve security.

Python

Mastering Python functools: Writing Better, Faster Code

By admin July 25, 2026

Stop letting your Python code lag due to redundant calculations. Discover how to use lru_cache, singledispatch, and partial in the functools library to optimize performance and clean up your code today.

Fedora

Fixing SELinux Errors on Fedora for Good: Use setroubleshoot and audit2allow Instead of Disabling It

By admin July 25, 2026

Stop disabling SELinux when encountering Permission Denied errors. Learn how to use setroubleshoot and audit2allow to fix AVC denied errors professionally on Fedora.

Fedora

Build Your Own High-Performance, Low-Cost Git Server with Gitea on Fedora: Maximum Security with SELinux

By admin July 25, 2026

A guide to building your own personal Git server with Gitea on Fedora Server. Learn how to configure MariaDB, optimize SELinux, and secure your system from A to Z.

Network

Configuring Multi-WAN Failover on Linux: A “Never-Down” Internet Solution with Keepalived

By admin July 24, 2026

Don't let internet outages disrupt your business. Learn how to configure Multi-WAN Failover on Linux for automatic ISP switching in seconds.