Google Apps Directory Sync Administration Guide - Manual (Page 77)

Configuration 77
User Attributes
Specify what attributes Google Apps Directory Sync will use when generating the
LDAP user list.
LDAP User Attribute
Setting
Description
Email Address
Attribute The LDAP attribute that contains a user’s primary
email address.
Example: The default is mail .
Unique Identifier
Attribute An LDAP attribute that contains a unique identifier for
every user entity on your LDAP server. Providing this
value enables GADS to detect when users are
renamed on your LDAP server and sync those
changes to Google Apps.
This field is optional, but recommended.
Example: objectGUID
Alias Address
Attributes
(if needed)
One or more attributes used to hold alias addresses.
These addresses will be added into Google Apps as
nicknames of the primary address listed in the Email
Address Attribute field.
Example: proxyAddresses