Zimbra SkillZ: Confidential Header Zimlet

Hello Zimbra Customers, Partners & Friends, The Confidential Header Zimlet implements the reading and setting of the Sensitivity header RFC2156 in the Zimbra Modern UI. For consistency, it is implemented the same way as in MS Outlook. Configuring Zimbra To allow the setting of the Sensitivity header, enable it on the Zimbra server: zmprov mcf […]

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Security Update: Zimbra not vulnerable to recent OpenSSL and Spring RCE Vulnerabilities

Hello Zimbra Friends, Customers & Partners, New vulnerabilities in the OpenSSL and Spring Framework projects have been all over the news lately. The Zimbra Engineering team has spent some time digging into these issues to understand any potential impact to Zimbra. The good news is Zimbra does not appear to be affected by the recent […]

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Zimbra SkillZ: Enable DANE Verification for Incoming Email in Zimbra

Hello Zimbra Customers, Partners & Friends, In this post, you’ll learn how to enable DANE for incoming email in Zimbra. DANE is a security protocol that adds additional verification of a TLS certificate. We covered setting up DANE for outgoing email in this post. Here’s some background … Email is sent over the internet with […]

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Email security webinar about DMARC

Hello Zimbra Customers, Partners & Friends, Zimbra’s Barry de Graaff and Randy Leiker from Skyway Networks team up for a new webinar series focused on Email Security. These hands-on webinars will include practical how-to information and best practices to help you maximize Zimbra. Learn how to fine-tune key security standards like SPF, DKIM, DMARC, MTA-STS, […]

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NEW Zimbra Patches: 9.0.0 Patch 24 + 8.8.15 Patch 31

Hello Zimbra Friends, Customers & Partners, Zimbra 9.0.0 “Kepler” Patch 24 and 8.8.15 “James Prescott Joule” Patch 31 are here. Update on Log4j Vulnerability After intensive review and testing, Zimbra Development determined that the zero-day exploit vulnerability for Log4j (CVE-2021-44228) does not affect the currently supported Zimbra versions (9.0.0 & 8.8.15). Zimbra currently uses Log4j […]

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