[root@mail config]# vi config.inc.php
    'user_specific' => true,

    // Search mail users under same domain.
    'base_dn'       => 'domainName=%d,o=domains,dc=abc,dc=net',
    'bind_dn'       => 'mail=%u@%d,ou=Users,domainName=%d,o=domains,dc=abc,dc=net',

    'hidden'        => false,
    'searchonly'    => false,
    'writable'      => false,

    'search_fields' => array('mail', 'cn', 'sn', 'givenName', 'street', 'telephoneNumber', 'mobile', 'stree', 'postalCode'),

    // mapping of contact fields to directory attributes
    'fieldmap' => array(
        'name'        => 'cn',
        'surname'     => 'sn',
        'firstname'   => 'givenName',
        'title'       => 'title',
        'email'       => 'mail:*',
        'phone:work'  => 'telephoneNumber',
        'phone:mobile' => 'mobile',
        'street'      => 'street',
        'zipcode'     => 'postalCode',
        'locality'    => 'l',
        'department'  => 'departmentNumber',
        'notes'       => 'description',
        'name'        => 'cn',
        'surname'     => 'sn',
        'firstname'   => 'givenName',
        'title'       => 'title',
        'email'       => 'mail:*',
        'phone:work'  => 'telephoneNumber',
        'phone:mobile' => 'mobile',
        'phone:workfax' => 'facsimileTelephoneNumber',
        'street'      => 'street',
        'zipcode'     => 'postalCode',
        'locality'    => 'l',
        'department'  => 'departmentNumber',
        'notes'       => 'description',
        'photo'       => 'jpegPhoto',
    ),
    'sort'          => 'cn',
    'scope'         => 'sub',
    'filter'        => '(&(enabledService=mail)(enabledService=deliver)(enabledService=displayedInGlobalAddressBook)(|(objectClass=mailList)(objectClass=mailAlias)(objectClass=mailUser)))',
    'fuzzy_search'  => true,
    'vlv'           => false,   // Enable Virtual List View to more efficiently fetch paginated data (if server supports it)
    'sizelimit'     => '0',     // Enables you to limit the count of entries fetched. Setting this to 0 means no limit.
    'timelimit'     => '0',     // Sets the number of seconds how long is spend on the search. Setting this to 0 means no limit.
    'referrals'     => false,  // Sets the LDAP_OPT_REFERRALS option. Mostly used in multi-domain Active Directory setups

    'group_filters' => array(
        'departments' => array(
            'name'    => 'Mailing Lists',
            'scope'   => 'sub',
            'base_dn' => 'domainName=%d,o=domains,dc=abc,dc=net',
            'filter'  => '(&(objectclass=mailList)(accountStatus=active)(enabledService=displayedInGlobalAddressBook))',
            'name_attr' => 'cn',
            'email'     => 'mail',
        ),
    ),
);
$config['autocomplete_addressbooks'] = array('sql', 'global_ldap_abook');