Sunday, March 24, 2019
Dockerizing Zimbra

How to solve Zimbra zmconfigd not running/starting

Have you tried starting zmconfigd on your Zimbra server but can't get it running?. This guide will show you the most common reasons/solutions to why zmconfigd can't start on your Zimbra...

Zimbra Multi-Server Installation on CentOS 7

This guide is to help you perform a Zimbra Multi-Server Installation on CentOS 7. Zimbra has been rated as the best open-source Mail collaboration suite. It can only be matched with Exchange...

Zimbra Firewall Configuration with ufw for Ubuntu and firewalld for CentOS

In this guide, we're going to look at how to secure your Zimbra collaborative suite on CentOS 7.x and Ubuntu server using Firewalld and Ufw respectively. If your server...
Postfix Commands Administration Cheat Sheet

Postfix Commands Administration Cheat Sheet

Hello good people, here is a Postfix Commands Administration Cheat Sheet I made as a quick reference when administering Postfix. It contains most used postfix commands for troubleshooting problems. Postfix is...
install cbpolicyd

How to Install cbpolicyd On CentOS 7

Hello good people, in today’s post we’ll have a look at how to install and get cbpolicy up and running on CentOS 7.x. We’ll cover installing Mariadb server the setting up...

Fix ERROR: zclient.IO_ERROR (invoke Connection refused, server: localhost) (cause: java.net.ConnectException Connection refused on Zimbra

Ever encountered this error " INFO: I/O exception (java.net.ConnectException) caught when processing request: Connection refused INFO: Retrying request ERROR: zclient.IO_ERROR (invoke Connection refused, server: localhost) (cause: java.net.ConnectException Connection refused)" on Zimbra. When you...

Managing Distribution Lists on Zimbra Mail Server

Welcome to our guide on Managing Distribution Lists on Zimbra Mail Server. Zimbra is among the most used Email collaboration systems. It has proven to be a reliable, scalable...
Dockerizing Zimbra

Running Zimbra on Docker Container

I’ve been working on  Dockerizing Zimbra on CentOS 7 base image. The hard work has finally yielded fruits and in this post, I’m going to share my Docker Github repository which...

How to Set Secure Password Policy on Zimbra

In this guide, we'll look at all the modification you need to Set Password Policy on Zimbra server. By default, Zimbra doesn't enforce any strong password requirements for a user account. This...

Install and Configure Postal Mail Server on Ubuntu 18.04 LTS

Having a fully featured email solution is a basic requirement of any business, institution or company. Here we will discuss the installation of Postal Mail Server on Ubuntu 18.04 LTS. Postal is...