Author Archive | Jorge de la Cruz

Zimbra’s Wiki – now 17x Faster!

Greetings, Friends. Over the last few months we received reports that our Tech Center was suffering from occasional timeouts or long waiting periods. Not good! We know that our tech articles are critical for your Zimbra deployments and/or configurations, so I have good news for you today. But first, a little background: For those new […]

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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/Synacor Extending General Support & Technical Guidance for Zimbra Collaboration 8.6.x

General support for Zimbra Collaboration 8.6 was scheduled to end in late September of this year. Synacor is pleased to announce that we are now extending these dates as follows: General Support* for Zimbra Collaboration 8.6.x through 30 September 2018 Technical Guidance** for Zimbra Collaboration 8.6.x until 30 September of 2019 Zimbra/Synacor highly recommends upgrading to Zimbra Collaboration […]

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