The Debian 8.0 Repository for Kolab 16 does not work anymore since its last build.
apt-get update throws the following, even on a fresh debian Install or on a ready installed system which has to be updated.:
Ign http://obs.kolabsys.com ./ Translation-de_DE
Ign http://obs.kolabsys.com ./ Translation-de
Ign http://obs.kolabsys.com ./ Translation-en
Es wurden 69,5 kB in 1 s geholt (49,7 kB/s).
Paketlisten werden gelesen... Fertig
W: GPG-Fehler: http://obs.kolabsys.com ./ Release: Die folgenden Signaturen konnten nicht überprüft werden, weil ihr öffentlicher Schlüssel nicht verfügbar ist: NO_PUBKEY A01D0CA80038D0DB

GPG-Error the following signatures could not be checked because their public key is missing

Can somebody check the repository and may be rebuild it?

priority high