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Installing Webmail Client with Roundcube on Ubuntu 20.04: A Tutorial

Roundcube is an open-source IMAP browser-based email client. It has gained popularity for supporting ACLs and utilizing AJAX (Asynchronous JavaScript and XML) technology. It has excellent features and end-to-end functionalities like email management, MIME support, and folder manipulation, to name a few. Besides, Roundcube offers message searching, spelling checks, calendars, and contact management seamlessly. Above all, it has a robust …

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Installing and Configuring Postfix as a Send-only SMTP Server on Ubuntu 20.04

Postfix is a popular free and open-source software that acts as a mail transfer agent (MTA). The job of Postfix is to route and deliver emails. Besides the classic usage, Postfix can also be configured to send emails by local applications only. This application of Postfix is a useful trick to deploy in various situations. For example, it can be …

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The Best Ways to Use Google’s SMTP Server

While many of us enjoy Google’s services in one form or another, very few seem to leverage the portable SMTP server feature that comes with Gmail and Google Apps email. The Google SMTP server is reliable and free of charge. Instead of managing a personal SMTP server on your CloudSigma workload, Google’s SMTP server can be set with almost any …

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Configuring an Iptables Firewall: Basic Rules and Commands

Introduction Iptables​ is a command-line ​firewall ​utility. This means that it is software that allows you to configure a firewall on your system. It is typically available by default on ​Linux​ systems. In this guide, we will ​discuss some of the common rules and commands that go with the iptables​ firewall. Whenever a connection tries to establish itself with your …

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Host your own Git Repositories with GitLab

In this post, I am going to demonstrate the installation of GitLab. With GitLab, we can host our own repositories at a central place with the ease of the Git features. GitLab is the first single application for all stages of the DevOps lifecycle. Only GitLab enables Concurrent DevOps, unlocking organizations from the constraints of the toolchain. In addition, GitLab …