[Samba] Samba4 and idmap backend (ad/rid)

[Jaymzwise Jaymzwise]

Hi,

I eventually managed to install and join a Samba4 server as a member in an
AD environment but I have a problem with the id command.
wbinfo commands work but when I launch id command with a domain user I get
"user unknown".

Here is my smb.conf (Took from Samba Wiki) :

idmap config *:backend = tdb
   idmap config *:range = 70001-80000
   idmap config MYDOMAINNAME:backend = ad
   idmap config MYDOMAINNAME:schema_mode = rfc2307
   idmap config MYDOMAINNAME:range = 500-40000

   winbind nss info = rfc2307
   winbind trusted domains only = no
   winbind use default domain = yes
   winbind enum users  = yes
   winbind enum groups = yes

If I replace "idmap config MYDOMAINNAME:backend = ad" by "idmap config
MYDOMAINNAME:backend = rid", id command works well. Why id command doesn't
work with ad backend ?

Thanks.