In many cases IT staff will have automated TLS certificates so they are renewed and deployed automatically. However sometimes the automation fails or deployments use an additional reverse proxy or web application firewall in front of Zimbra. In the latter case, sometimes the renewal of the Zimbra self-signed certificate is overlooked. Zimbra (LDAP) requires a […]
Archive | Open Source
Introducing Zimbra authentication module for SimpleSAMLphp
While a generic LDAP authentication module for SimpleSAMLphp exists, it is hard to set-up, it requires the use and storing of an admin bind credential and is in continous development making it impossible to install a working version of this module on a released version of SimpleSAMLphp. The Zimbra authentication module for SimpleSAMLphp makes it […]
Introducing Out Of Office Alert Zimlet
This Classic UI Zimlets displays an alert as soon as you enter an email address in to/cc/bcc of someone with an active out of office reply. Avoid putting time in writing an email just to be greeted with an out-of-office message after sending an email. Installing mkdir /opt/zimbra/lib/ext/outofofficealert wget https://github.com/Zimbra/out-of-office-alert-zimlet/releases/download/0.0.1/outofofficebanner.jar -O /opt/zimbra/lib/ext/outofofficealert/outofofficebanner.jar sudo su – […]
Zimbra Admin Console Zimlets and Extensions guide
For a long time Zimbra Administrators and Zimbra Delegated Administrators had the ability to manage their Zimbra infrastructure using the Zimbra Admin Console Web-UI. The functionality of the Zimbra Admin Console can be extended with Zimlets and Extensions allowing for more flexibility and integrations with 3rd party applications. We have created the admin-console-zimlets-and-extensions-guide repository where […]
Optimizing Zimbra security and TLS settings via a script (updated August 2023)
By Barry de Graaff on February 8, 2023 in Product News, Community, Open Source, Partners, Security & Privacy, Zimbra SkillZ
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 […]
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 […]