The partner meet-up in Essen was successful. On the 20th of May, we will organize another one in Ulm (Germany). More details to follow.
The Best Open Source Email & Collaboration Software
The Zarafa server use by default port 236. To use an encrypted connection you need to enable port 237 and create ssl certificates.
The webaccess runs on the a default Apache webserver, so port 80 or 443.