[Samba] can't turn off password complexity requirements

[bugblatterbeast]

Hello,

     I'm unsing Ubuntu 14.4 Server and samba 4.1.6-Ubuntu. Everything 
works great but I somehow fail to switch off the password complexity 
requirements. It is not unlikely that this is because I'm very 
unexperienced with Windows. I've heard that the password-settings are 
always a bit tricky and I did exactly what the windows-tutorials say. 
I've tried gpresult for several users and it always says, that it's ok.

     Are there any known problems with this setting?
     Is there a linux-way to check gpo-settings?
     Is there a step by step tutorial that is known to work with samba4?

Thanks in advance, bbb