Migrating opensource Zimbra 8.6.0 on Centos 6.8 to Zimbra 8.7.1 on Centos 7 safely and with no downtime !

Zimbra to Zimbra (zcs to zcs) migration A bit of history for the context After running a Zimbra mail server in a 500Gb Virtual Machine, for about 4 years, the server started feeling a bit crowded and with  #df -h reporting less than 50Gb of space left, it was time to move to a larger machine. The version I was (and still am) running is the open source version, there are no migration tools available as part of the package, although you

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Installing Zimbra 8.7.1 On centos 7

   Before we begin Before we even begin, this blog post assumes the reader has basic understanding of Linux, TCP/IP, DNS, and how email in general works. It also assumes you are familiar with the Linux command line. The commands highlighted in the black boxes, are the commands you need to run. Most of the time I will not go into what they output, I assume you are familiar with these, and if you are not, I suggest you become

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