[Samba] Question about samba 4 member server of a pure Windows AD

[Stéphane PURNELLE]

Hi,

Actually, we have a samba 4 AD DC and 2 samba 4 AD member server as 
file-server.
But my company is member of a group who have i proper AD (A windows AD 
server)

I don't know if the windows AD has implemented rfc2307 and if the sysadmin 
of the windows AD can add rfc2307.

I just would like to know if there are alternative for have uid <> sid 
mapping without rfc2307.
LIke extract uid from windows SID (based on algorithm uid = uid*2 + 1000 
or something like this)

thank you for your help

        Stéphane Purnelle