Archive | Zimbra Server

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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Zimbra Mobile Plus – How to configure Microsoft Outlook 2013 with shared resources using ActiveSync

Hello, Everyone. In this blog post, I will present another great feature from the new Zimbra Suite Plus. This feature provides the ability to synchronize shared resources in the Zimbra Web Client using ActiveSync, which can then be shared to any device on any platform. In this post, I will show this feature using Microsoft […]

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