Zextras Team – A Top-notch Communication System for Zimbra

Zextras Team brings private chat, group messaging, corporate messaging, file sharing, screen sharing, and video conferencing all in a unified package. It complements the Zimbra collaboration suite open-source edition functions...

How to Install Zextras Theme for Zimbra

Zextras theme is a modern-looking theme for Zimbra compatible with Zimbra 8.6 and above including Zimbra 9. It does not change any classic UI element or functionality, so you don’t...

What is Zimbra log4j?

log4j is a logging framework written in Java, it is also used by Zimbra as the log manager for java processes. In this article, we will take a look at...

Zimbra Upgrade on Ubuntu LTS

This guide is divided into two parts Single server upgradeMulti-server upgrade Zimbra Postscreen is enabled by default on Zimbra 8.7 and above. The only thing you need to do is...

Postscreen Attributes Explained

Zimbra Postscreen Zimbra Postscreen is an anti-bot/dos started in Zimbra 8.7. It tackles mail server overload by keeping spambots away and making more SMTP processes available for legitimate clients. Zimbra...

How To Use Zimbra Postscreen?

In this article, you will learn about using and configuring Zimbra Postscreen. Zimbra Postscreen Zimbra Postscreen is an anti-bot/dos started in Zimbra 8.7. It tackles mail server overload by keeping...