extern uschar *acl_smtp_auth; /* ACL run for AUTH */
extern uschar *acl_smtp_connect; /* ACL run on SMTP connection */
extern uschar *acl_smtp_data; /* ACL run after DATA received */
-#ifdef EXPERIMENTAL_PRDR
+#ifndef DISABLE_PRDR
extern uschar *acl_smtp_data_prdr; /* ACL run after DATA received if in PRDR mode*/
const extern pcre *regex_PRDR; /* For recognizing PRDR settings */
#endif
extern uschar *pid_file_path; /* For writing daemon pids */
extern uschar *pipelining_advertise_hosts; /* As it says */
extern BOOL pipelining_enable; /* As it says */
-#ifdef EXPERIMENTAL_PRDR
+#ifndef DISABLE_PRDR
extern BOOL prdr_enable; /* As it says */
extern BOOL prdr_requested; /* Connecting mail server wants PRDR */
#endif