How to Set Up Zimbra FOSS Two-Factor Authentication


Security is a top priority in any system, and email is no exception. Zimbra FOSS offers a robust open-source email solution, and setting up two-factor authentication (2FA) is a crucial step to enhance security. This article will guide you through the process of setting up 2FA on ZimbraZimbra FOSS in a detailed and easy-to-understand manner, ensuring your email accounts are better protected against potential threats.

How to Set Up Two-Factor Authentication on Zimbra FOSS

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The work will consist of the following parts:

  • A patch to the login screen to support entering the 2FA code.
  • PrivacyIDEA and PrivacyIDEA LDAP Proxy docker containers to run and maintain the 2FA toekens on your Zimbra*
  • Zimlet for integrating in the web-ui of Zimbra (SOAP based) with extension on the server (java soap api)
  • Install documentation
  • All released under GNU GPLv2.


Implementing two-factor authentication on Zimbra FOSS not only helps protect your email accounts but also enhances the overall security of your organization. We hope this article has provided you with the necessary steps to set up 2FA effectively. Always stay updated with the latest security measures to ensure information safety in today's digital environment.


  1. Hi,

    Some limit on privacyidea as below:

    You are using privacyIDEA with more than 50 users.

    Thank you for your trust!

    For the productive enterprise use we recommend the privacyIDEA Enterprise Edition.

    NetKnights provides the privacyIDEA Enterprise Edition including Support and Service Level Agreements. Moreover NetKnights provides services, consultancy and payed programming of new features.

    Tuan Ngo


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