Can I login file server by using linux local user account when role=active directory domain controller ?

[hyoscar wu]

Sorry for my too simple description,

Before enabling samba4 ADDC, I run samba4 as a standalone file server and
passdb backend=smbpasswd .
I create the same accounts in /etc/passwd and smbpasswd file.

Can I login file server by using smbpasswd account (non domain account)
when samba4 role = ADDC ?