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How to Get Started with NovaCloud

Introduction NovaCloud, powered by IP ServerOne, is a public cloud hosting service built on OpenStack technology. It enables users to deploy and manage Virtual Machines (VMs) or instances with full control over computing resources. This scalable platform is ideal for hosting websites, applications, databases, and handling large workloads, offering flexibility to scale compute capacity as

Why Suspended Emails Are Still Sending and How to Prevent It

Introduction When an email account is suspended, it should not have the ability to send emails. However, in some cases, suspended accounts may still send emails due to pending messages in the mail queue. This guide provides a step-by-step approach to identifying and resolving this issue, ensuring no further unauthorized emails are sent.   Prerequisites

How to disable ipv6 on Centos

Important Note: CentOS 7 has reached its end-of-life (EOL) as of June 30, 2024. It is recommended to upgrade to a supported version, such as CentOS Stream 9 or an alternative Linux distribution, to ensure continued security updates and support.   Introduction Disabling IPv6 on your server may be necessary for various reasons, such as

How to Check If Users Are Logging in via POP3 or IMAP

Introduction Checking whether an email account is using POP3 or IMAP can be essential for troubleshooting email access issues, verifying login activity, or ensuring the correct configuration of email clients.   Understanding POP3 and IMAP What is POP3? Post Office Protocol version 3 (POP3) is a standard email protocol used to retrieve emails from a

How to monitor Server Performance with htop and top

Introduction Monitoring server performance is crucial for maintaining system stability, optimizing resource usage, and quickly identifying potential issues. Two of the most widely used tools for this purpose are htop and top, both of which provide real-time, command-line-based monitoring of system processes and resource utilization. These tools help administrators gain valuable insights into CPU usage,

Error: “Server Error” While Uploading an Attachment in Roundcube Webmail

Introduction When uploading attachments in Roundcube Webmail, you might encounter a “Server Error.” This issue often arises from file size limits, server security rules (such as ModSecurity settings), or network interruptions. ModSecurity is a web application firewall designed to protect servers by monitoring and blocking potentially harmful requests. However, its strict security rules can sometimes