DNS Error joining Samba 3.6.x to samba4 ADS

[Kahle, Markus]

Hi ! 

I'm trying to join a samba 3.6.6 Server as a member server to an AD domain with samba 4 (version 4.0.0beta5-GIT-867de2f) built today, DNS is bind-9.8.3. 
The AD is running with no problems and joining a windows7 client works with no problem and DNS got updated. 

But when joining the samba4 AD with a samba 3.6.6 server as a member i got the following error message: 

--- 
[root at underworld2 samba]# net ads join -U Administrator at AD.BEL 
Enter Administrator at AD.BEL's password: 
Using short domain name -- BEL 
Joined 'UNDERWORLD2' to realm 'ad.bel' 
DNS Update for underworld2.ad.bel failed: ERROR_DNS_INVALID_MESSAGE 
DNS update failed! 
--- 

And this message in the log of the domain controller: 

--- 
Jul 24 16:56:17 uw2 named[19252]: samba_dlz: starting transaction on zone ad.bel 
Jul 24 16:56:17 uw2 named[19252]: client 10.0.0.194#47842: updating zone 'ad.bel/NONE': update unsuccessful: underworld2.ad.bel/A: 'RRset exists (value dependent)' prerequisite not satisfied (NXRRSET) 
Jul 24 16:56:17 uw2 named[19252]: samba_dlz: cancelling transaction on zone ad.bel 
Jul 24 16:56:17 uw2 named[19252]: samba_dlz: starting transaction on zone ad.bel 
Jul 24 16:56:17 uw2 named[19252]: samba_dlz: spnego update failed 
Jul 24 16:56:17 uw2 named[19252]: client 10.0.0.194#47842: updating zone 'ad.bel/NONE': update failed: rejected by secure update (REFUSED) 
Jul 24 16:56:17 uw2 named[19252]: samba_dlz: cancelling transaction on zone ad.bel 
--- 

Any hints how to fix this problem ? 


Thanks in advance, 


Markus