webDAV not working on iMAC

[User, Kolab]

> What do the web server logs say?
/var/log/chwala/errors -> nothing

> Also which version of Kolab are you running?
Kolab 3.1 on Cent OS (chwala-0.2-2.e16.kolab_3.1.noarch)

> Which OS?
OS X 10.9.1

Access url is https://webdav.domain.com

Virtual Host as follows:

<VirtualHost *:443>
  ServerName webdav.domain.com
  DocumentRoot /usr/share/iRony/public_html
  SetEnv WEBDAV 1
</VirtualHost>

Thanks for a hand!