Postfix/Zarafa mail server move

We recently needed to upgrade the storage on our email server. To keep downtime to a minimum we decided to install the server on new hardware and transition everything over. In the past when we used maildir for mail storage this was easy. Simply pause the queue, rsync the mail, point SMTP ports to new server, unpause queue, rsync again. The upgrade this time is more complicated because we are using Zarafa. Zarafa is a great email server. There are open source, free, and commercially licensed version available.

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