With Samba 3, which LDAP object class contains the Samba password attribute in the LDAP backend.

For Samba 3, when using an LDAP backend, the `sambaSamAccount` object class extends standard LDAP entries to store Samba-specific attributes, including hashed passwords (e.g., `sambaNTPassword` and `sambaLMPassword`). This class is critical for enabling Samba to retrieve and validate user credentials against an LDAP directory.

`shadowAccount` is primarily used for Unix-like password management in LDAP and does not inherently store Samba-specific password attributes.

`inetOrgPerson` is a generic LDAP object class for representing people and does not contain Samba-specific password attributes; `sambaSamAccount` typically extends it.

`sambaUnixIdPool` is an object class used for managing UID/GID pools for ID mapping, not for storing individual user password attributes.

`sambaPasswdMap` is not a standard LDAP object class used by Samba for storing user password attributes in an LDAP backend.