Constants prefixed with ADS_CHASE_REFERRALS_* indicate whether or not queries should resolve references in a directory service to files that exist in separate root directories.
#define ADS_CHASE_REFERRALS_NEVER ( 0 )
#define ADS_CHASE_REFERRALS_SUBORDINATE ( 0x20 )
#define ADS_CHASE_REFERRALS_EXTERNAL ( 0x40 )
#define ADS_CHASE_REFERRALS_ALWAYS
(ADS_CHASE_REFERRALS_SUBORDINATE | ADS_CHASE_REFERRALS_EXTERNAL )