On Sun, 2014-05-25 at 14:52 +0000, Vogel, Sven wrote: > Hi Steve, > > How i add such a host principal? > I think the host/ principal is already there isn't it? samba-tool domain exportkeytab /etc/krb5.keytab --principal=host/alice.example.com If not, create it: samba-tool spn add host/alice.example.com sven then add it. HTH