ZIMBRA Plugins

FREE [ZI-KNOCK] secure admin access

For administrators

ZI-KNOCK Zimlet is an easy-to-use tool for securing access to the Zimbra system admin panel. Without activating the Zimlet in the administrator mail account, access to the admin panel is permanently blocked. Access to the panel from www.mail.companydomaine.com:7071 is not available. 


ZI-Knock Zimlet to protect your admin panel from hackers
ZI-Knock is the admin tool that secure of access process to Zimbra admin web panel. ZI-Knock is tightly integrated with Zimbra, with well-known Zimbra interface, easy and comfortable for administrators. This solution is available for both Zimbra versions: Network Edition and Open Source.


Main features:

  • Simple, fast and effective zimlet for admin panel
  • 100% panel lock, gives you more safety !!!
  • You decide when you want to login to Zimbra admin panel
  • Full access control

ZI-Knock zimlet features:

  • Easy to use zimlet
  • Fast deployment on your server
  • Dedicated for each administrator account
  • Language: Polish, English


Zimbra: 8.8.15 Network Edition or Open Source
OS: Linux, MacOS X, Windows
Browsers: Chrome, Firefox, Safari and Edge


Plugin summary:


ZIMBRA Plugins FREE [ZI-KNOCK] secure admin access

You can use this solution for free!:


0,00 EUR
Purchase details

ZI-KNOCK – more information


Number of accounts

ZI-Knock plugin is not licensed for accounts (mailboxes) that are created on your Zimbra server.

Subscription and support

ZI-Knock plugin is for free without Intalio support hours included.

All other information is available on the ZI-Knock plugin documentation pages (below this box).


Choosing deployment during purchasing, give you the right to get direct support from Intalio Services in installation and configuration part of ZI-Knock plugin.

The deployment process consist of following steps:

  1. Preparing specification and details of deployment – direct contact with Customer.
  2. Installation of ZI-Knock zimlet.
  3. Configuration of ZI-Knock plugin according to the specification (point 1.).
  4. Testing.
  5. Production readiness.


  • ssh access to Zimbra servers (root level).
  • web access to Zimbra servers.

Emerging markets

Check if you are on the list: https://www.msci.com/countries-heat-map

Other information

ZI-Knock plugin is available in English and Polish version.




User's Guide

Installation and Administrator's Guide