[Samba] Join DC has failed with error: NT_STATUS_PASSWORD_RESTRICTION

[tomek82]

 Hi,  

I've joined samba DC to existing windows domain using:

samba-tool domain join ***.** DC -U"***\admin" --dns-backend=BIND9_DLZ

It has stopped on 

Adding DNS account CN=dns-DC...

with the below error. 

ERROR(runtime): uncaught exception - (-1073741716, 'SetUserInfo2 level 26 for [dns-DC] failed: NT_STATUS_PASSWORD_RESTRICTION')

when the BIND9_DLZ is not specified the join is finished without any errors.
How can I join with Bind backend? 

Thanks,
Tom