Kopano Cheat Sheet

Integrate Shared Calendar in Outlook

Download the plugin from here:


List all Users

kopano-admin -l

How to renew a Let’s Encrypt SSL certificate on a Kopano Server

There is no one way to do this, but you could try this sequence:

service httpd stop;/usr/bin/certbot renew;service httpd start;service kopano-gateway restart
  • The above procedure:
    • Stops the web server
    • Runs the certbot renew command
    • Restarts the web server
    • Restarts the kopano-gateway service

How to block an email from a user using the Kopano Web App

Users can block emails from other users using the Kopano web application. Here are the steps:

1. Log in to https://domain.com/webapp/ with your username and password.
2. Got to “Settings” top right
3. Go to “Rules” and press “New”

On the rule form, do the following:

  • Fill in the “rule name” (can be anything for example delete all email from [email protected]
  • Underneath “When the Message…” choose “…is received from” and go to “Select one…” and type the errant email address (by From: at the botton)
  • At “Do the following…” choose “Delete the message”.

Save the rule.

How to reset a Kopano password

Kopano passwords are reset using the command line.

  1. SSH to the server
  2. Use this command
kopano-admin -u [email protected] -p NewSecret
User information updated.

If you have an older version of Kopano, as in ancient, do the below instead. All that’s difference is kopano-admin is replaced with zarafa-admin

zarafa-admin -u [email protected] -p NewSecret
User information updated.



How to create a new Kopano user

kopano-admin -c [email protected] -p secret -e [email protected] -f "Full Name"

How to delete a Kopano user

kopano-admin -d [email protected]

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