Kopano on Ubuntu or debian

Hi,
im looking for a good howto to install kopano on my ubuntu / debain system.
Maybe the best option is when i can install kopano without a postfix.
I have a Email server, and i will fetch the emails about my own mail server.
-> Sending and received with mail1.server
-> Kopano = kopano1.server.de

I successfully use Kopano from the community builds using sendmail for both receiving and sending emails if that helps.

@mcostan

did you look at the https://kb.kopano.io/display/WIKI/Installation wiki. That is a good start.

I don’t now if you’re german. If so i could post some links with how to’s in german.