Why Emails are going to Spam from my Domain?

Email marketing is a lucrative business and growing rapidly. It’s is not only effective but the cost per lead is very small compared to other ways of digital marketing. Also, in today’s world when everyone is digitally connected, what would be the best way to promote a product? But there are several mistakes newcomers do […]

Build Your Own Torrent Downloader using Transmission Client

Recently, I wanted to download CentOS image, but owing to the large file I thought torrent download would be easier. But my service provider doesn’t allow torrent connection. So, what’s the solution? Luckily we have transmission torrent client which can be installed on any Linux server. Fun fact is that you need not necessarily buy […]

How to Connect to Remote Server using SSH from Windows/Linux

Connecting to a remote server using SSH from Windows or Linux machine is a sort of necessity nowadays for developers. In fact, a normal user who has to manage multiple machines also needs to access another machine remotely. Therefore, learning ways to connect to the remote server is not optional anymore. In this tutorial we […]

Mailu Docker Compose Setup – Build Self Hosted Mail Server

Mailu is powerful full featured mail server build as a Docker image set. It is open source and free software backed by plethora of developers on github. Some of it’s features are Standard email server, IMAP and IMAP+, SMTP and Submission Advanced email features, aliases, domain aliases, custom routing Web access, multiple Webmails and administration […]

Install and Configure MailCow – Best Self Hosted Mail Server

Though there are several mailing solution for self hosted mail server, but installation and configuration can be headache some times. MailCow is fully feature loaded mailing script based on Dovecot, Postfix, SoGo and other open source software. It’s not easy to install, but also provides a modern web user interface for user and server administration. […]

Install Docker and Docker-Compose on Ubuntu

If you are reading this article it means you might have heard a lot about docker. Or, just in case you haven’t heard about docker, let’s understand it from very beginning. So, coming to very first question that would pops up in any mind, what is docker? What does it do and why should we […]

How to Install Free SSL Certificate on Zimbra Mail Server

In article Install Zimbra Mail Server on CentOS 8, we learned to install Zimbra on CentOS. This article discusses steps required to install Let’s Encrypt free SSL certificate on Zimbra. Installing Free SSL Certificate on Zimbra: Method 1 This method is proven one though you have to manually do all the steps. Other method discussed […]

Install Zimbra Mail Server on CentOS 8 Step by Step

Zimbra is a very popular mailing solution used by thousands of big companies as well as organizations including academic institutions. It is developed and maintained by Synacor. It includes many features like email, chat, calendar, etc. Basically, Zimbra is collaborative software and known as Zimbra Collaborative Suite (ZCS). It is available in two editions one […]

What are DKIM, DMARC and SPF? How they affect email delivery?

Whenever we talk about email delivery to inbox first thing that pops up in our mind is email security protocols, which are none other than DKIM, DMARC, and SPF. They play key important role inbox delivery. In order to understand what role they play, let’s understand how receiving server concludes a particular email is spam […]

Build Self Hosted Private Chat Server with Open Source rocket.chat

The need to build a self-hosted private chat server arises due to many reasons. For instance, a company or organization wants to prevent company secrets from falling in the wrong hands, new software development or to ensure privacy, etc. Basically, information from popular chat services like WhatsApp, Messenger, Skype, Telegram, ICQ can easily be taken […]