[Kolab-devel] Installing Kolab on CentOS fails :(

[Marco Betschart]

Dear Kolab Devs!

I currently try to install Kolab on a CentOS box using the following manual:
http://docs.kolab.org/installation-guide/centos.html

Unfortunately installing fails since a GPG key could not be found:
Downloading Packages:
warning: rpmts_HdrFromFdno: Header V3 RSA/SHA1 Signature, key ID b4f6d430: NOKEY
Retrieving key from http://obs.kolabsys.com/repositories/Kolab:/3.2/CentOS_6/repodata/repomd.xml.key

Any ideas how to solve this issue?

Thanks
  Marco