Get an email notification when Zimbra TLS certificates are about to expire

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 […]

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Patch for Zimbra Daffodil 10.0.2, 9.0.0 Patch-34 & 8.8.15 Patch-41

Security bug fixes and OpenSSL upgrade Zimbra OpenSSL now runs in FIPS-compliant mode by default. This increases security which requires no additional action on your part. However, should you run into issues, you can find steps to disable OpenSSL FIPS in the release notes. This patch upgrades OpenSSL to major version 3.0.x. To safeguard your […]

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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 […]

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Security Update for Zimbra Collaboration Suite Version 8.8.15 CVE-2023-37580

An XSS vulnerability in Zimbra Collaboration Suite Version 8.8.15 that could potentially impact the confidentiality and integrity of your data has surfaced. We take this matter very seriously and have already taken immediate action to address the issue. Important: This vulnerability has been actively exploited, making it imperative to take immediate action. We strongly recommend […]

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Zimbra with on Cisco Duo cloud based Single Sign-On

In this article you will learn how to set-up Zimbra on Cisco Duo. Cisco Duo is a cloud based identity and access management solution developed by Cisco. Cisco Duo focusses on Two-Factor Authentication (2FA) and integrations with on premise Active Directory, and cloud based SAML IDP’s such as Azure AD, AD FS, Google, Okta, OneLogin, […]

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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 – […]

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