A partner has requested a script to implement the Security tips and TLS settings documented at https://wiki.zimbra.com/wiki/Cipher_suites and https://wiki.zimbra.com/wiki/Secopstips . At Zimbra we love scripts! This article shows a script that configures Zimbra with strong TLS and security settings. Prerequisites You have set up a correct hostname and DNS, to check, run the following as […]
Archive | Open Source
How to write to log files from a Zimbra Extension
In MyTest.java you can find some examples of how to write to the Zimbra log files. The most common ones are: ZimbraLog.extensions.info(“this is an info message that will show up in /opt/zimbra/log/mailbox.log”); ZimbraLog.extensions.error(“this is an error message that will show up in /opt/zimbra/log/mailbox.log”); To see the logging in action run a tail on the log […]
Did you know? How to use Zimbra Nextcloud integration with 2FA
In a previous blog we introduced the Zimbra integration in the Nextcloud Dashboard. A recent update in the integration added support for 2-factor authentication, so in case you enabled 2FA on your Zimbra account, you will also be asked to enter your 2FA (TOTP) token. In case you use 2FA on your Zimbra account you […]
Introducing Email Reminder Zimlet
With the Email Reminder Zimlet you can create a calendar reminder based on an email message. Just click the Create Reminder menu option and pick a date. Zimbra will send you an email reminder and show a pop-up to remind you! Interested in this Zimlet? https://github.com/Zimbra/zimbra-zimlet-email-reminder https://gallery.zetalliance.org/extend/items/view/email-reminder
Configuring Fail2Ban on Zimbra
This article is a how-to guide on installing Fail2Ban to block attacking hosts using a null route or blackhole routes. This can help mitigate brute force attacks on Zimbra. Especially brute force attacks on SMTP are very common. Prerequisite: Fail2ban has been tested in combination with netfilter-persistent and iptables. If you use ufw or firewalld […]
Nextcloud Talk Zimlet
Zimbra loves Nextcloud! And that is why Zimbra and Nextcloud work together to make both products integrate seamlessly. The Nextcloud Talk Zimlet add a button in the new appointment window that allows you to create a Nextcloud Talk meeting from the Zimbra Calendar. Screenshots Installing This Zimlet depends on the installation of Nextcloud Zimlet for […]