Kopano Cheat Sheet

How to set Kopano Out  of Office

Screenshot of Kopano out of office menu

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]

Usage Summary Script That Emails

The script below will summarize email and website usage and email recipients with the information.


totald1=`df -h | grep root | awk '{ print "Used:",$3, "| Available:",$4, "| Used: "$5"%"}'`
totald2=`df -h | grep mysql | awk '{ print "Used:",$3, "| Available:",$4, "| Used: "$5"%"}'`
cloud=`du -h --max-depth=1 /srv/www/htdocs/example.com/data/ | cut -d "/" -f 1,7`
users=`kopano-admin -l | grep "@" | awk '{print $1}'`
mail=`for i in $users; do echo $i; kopano-admin --details $i | grep "Current store size" | awk {'print $4}'; done`
d=`date +%m-%d-%Y`
echo "



" | mailx -r ServerUsage -s "Server Usage for $d" -b [email protected] [email protected]

Add the script to your CRONTAB to have regular usage updates.

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