Has anyone successfully used Z-Push with the standard Univention mail server setup (Postfix/Dovecot)? According to the Z-Push documentation, it can work with any IMAP server or directly with maildir folders (and Dovecot can save its data in maildir folders). I don’t want to use Kopano. I’d like to use the standard server with a simple web frontend like Roundcube. But I’d really like to have Z-Push as well, and that only seems to be available if you switch completely to Kopano.