Archive | Zimbra Server

New Patches for You! Zimbra 8.8.8 “Turing” Patch 1 + Zimbra 8.7.11 Patch 2

Patch 1 has been issued for 8.8.8 GA release that includes fixes as listed in the release notes. Fixed Issues (Bugzilla query) 35115 RFE: Handling multi-valued zimbraAuthLdapURL 108928 [Defanger] Specific message causing defanger to loop and cause high CPU load 108929 [Zimbra Chat] Multiple spaces getting trimmed from chat message 108930 [Zimbra Talk] “Incoming video […]

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How to Install Zimbra Collaboration 8.8 on Ubuntu 16.04 LTS

Greetings, Everyone. In this blog post we will cover the installation of the latest Zimbra Collaboration 8.8 Network Edition release on Ubuntu 16.04 LTS, using dnsmasq as a DNS Server. These steps cover a single-server installation. If you are looking for multi-server installation steps, please visit our official guide. This blog post is a bit […]

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How to Reduce Incoming SPAM and MTA Overload using Postscreen

Zimbra Postscreen, availabile starting with Zimbra Collaboration 8.7, provides additional protection against mail server overload. One postscreen process handles multiple inbound SMTP connections and decides which clients may talk to a Post-fix SMTP server process. By keeping spambots away, postscreen leaves more SMTP server processes available for legitimate clients and delays the onset of server overload […]

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How to block incoming users or domains

Hello everyone, Zimbra Collaboration includes anti-SPAM and antivirus technologies such as Postscreen, Spamassasin, Amavis, ClamAV, etc. But sometimes, for legal reasons, etc., we need to block certain senders or even entire domains from sending unsolicited email. To do this, we will use the tools that come native to Zimbra Collaboration, and with a few simple […]

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Zimbra Collaboration 8.7.2 and 8.6 Patch 8 are Available

In July of last year, we announced Zimbra Collaboration 8.7, which included four of my favorite, admin-related features including Two-Factor Authentication (2FA), a new Zimbra Packaging System, SSL Server Name Identification (SNI) and Zimbra Postscreen. Today, I’m thrilled to announce our first minor release of 2017: Zimbra Collaboration 8.7.2, please go to the Downloads page […]

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