This article is a step-by-step instruction on setting up a Zimbra with Let’s Encrypt certificates. If you are running a multi server installation of Zimbra it is recommended you set-up a dedicated VM for obtaining the Let’s Encrypt certificate and follow this blog. Prerequisites This guide assumes you are using Ubuntu 20 and you have […]
Deprecation of the “X-XSS-Protection” header
Hello Zimbra Customers, Partners & Friends, In the past Zimbra recommended to set the X-XSS-Protection HTTP response header. This header used to enable additional protection against cross-site scripting (XSS) attacks in some web browsers. However this header is now deprecated and support is removed from most browsers. In case you have configured Zimbra to use […]
Zimbra Patches: 9.0.0 Patch 26 + 8.8.15 Patch 33
Hello Zimbra Friends, Customers & Partners, Zimbra 9.0.0 “Kepler” Patch 26 and 8.8.15 “James Prescott Joule” Patch 33 are here. The patches include What’s New, Security Fixes, Fixed Issues and Known Issues as listed in their respective release notes. Please refer to the release notes for the patch installation on Red Hat and Ubuntu platforms. […]
Automated installation of Zimbra and Lets Encrypt update!
Previously we introduced the zinstaller script that can be used for automating the installation of Zimbra. The zinstaller script will install a Zimbra 9 single server on Ubuntu 20 and will also obtain and install a 60-day trial license. It now also supports automated installation of Zimbra with Let’s Encrypt certificates and it will take […]
Zimbra SkillZ: Add an External Email Warning in Zimbra via the Admin Console
Hello Zimbra Customers, Partners & Friends, New with 9.0.0 Patch 25, you can add an external email warning in Zimbra using the Admin Console. An external email warning message alerts you when you receive email from an external domain. This is done using a Sieve filter, and it can be enabled per account, COS, domain […]
Zimbra SkillZ: Using Sieve Filters on Zimbra via the Admin Console
Hello Zimbra Customers, Partners & Friends, This article is a short how-to on using Sieve filters on Zimbra via the Admin Console. Sieve is a powerful scripting language for filtering incoming email messages. While Zimbra supports user set incoming email filters, the Sieve filters are meant to be set up and installed by administrators. Here’s […]