[Samba] Internal DNS not updating

[felix at epepm.cupet.cu]

I am using samba4 on debian squeeze virtualized on proxmox.

git snapshot 968da5f. today morning.

I compiled and installed as usual.

Though this is my first time using the internal DNS server.

The internal DNS server is not doing automatic updates. And this is the
message I get in log.samba:

 /usr/local/samba/sbin/samba_dnsupdate: RuntimeError: kinit for
AD$@EPEPM.CUPET.CU failed (Client not found in Kerberos database)
[2012/09/26 13:35:24,  0]
../lib/util/util_runcmd.c:334(samba_runcmd_io_handler)


Any idea of what is going wrong?

Cheers,
Felix.