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Introduction In this post, I will demonstrate how an email can be sent using Telnet — often mimicking spam or spoofed emails — and how to analyze the message headers …
Sometimes I need to upgrade or downgrade a virtual machine in Azure — maybe to get more CPU, RAM, or premium disk support. Instead of rebuilding from scratch, I just …
When working with Azure virtual machines, especially those using multiple data disks, it’s important to know which Azure managed disk maps to which drive letter inside the Windows OS. This …
Hey everyone! In this post, I’ll cover how to attach and resize both OS and data disks in Azure Virtual Machines. These are essential tasks if you’re managing virtual machines …
Hey friends! In this post, I want to explain a basic but important concept in Azure: the difference between an OS disk and a data disk on a Virtual Machine. …
To set up my internal Certificate Authority (CA), I installed and configured Active Directory Certificate Services on my domain-joined Windows Server. Here’s how I did it: ✅ Prerequisites: 🔹 Step: …
When I first created a Virtual Machine (VM) in Azure, I used the default network settings. Azure automatically created a Virtual Network (VNet) with the following: This worked fine at …
After installing Exchange Server 2019 on Windows Server 2025, the next step I took was configuring the server for actual email flow, user access, and security. This post covers the …
Today, I’m sharing my step-by-step process for installing Exchange Server 2019 on Windows Server 2025. While Exchange 2019 is the latest on-premises version from Microsoft, pairing it with the newer …
As a system administrator, I know how critical Active Directory (AD) is to the health and security of any Windows-based network. If AD goes down or gets corrupted, it can …