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

The `sambaSamAccount` LDAP object class is a specialized extension provided by the Samba schema for LDAP directories. This class includes specific attributes required by Samba, such as password information, allowing Samba to manage user accounts efficiently within a centralized LDAP structure.

`shadowAccount` is a standard LDAP object class for Unix-like shadow password attributes, but it does not contain Samba's specific password attributes.

`inetOrgPerson` is a generic LDAP object class for representing people and does not inherently include Samba-specific password attributes.

`sambaUnixIdPool` is related to ID mapping (UID/GID) for user and group allocation, not directly to the Samba password attribute.

`sambaPasswdMap` is not a recognized or standard LDAP object class within the Samba schema for storing password attributes.