extern int process_info_len;
extern uschar *process_log_path; /* Alternate path */
extern BOOL prod_requires_admin; /* TRUE if prodding requires admin */
+
+#ifdef EXPERIMENTAL_PROXY
+extern uschar *proxy_host_address; /* IP of proxy server */
+extern int proxy_host_port; /* Port of proxy server */
+extern uschar *proxy_required_hosts; /* Hostlist which (require) use proxy protocol */
+extern BOOL proxy_session; /* TRUE if receiving mail from valid proxy */
+extern BOOL proxy_session_failed; /* TRUE if required proxy negotiation failed */
+#endif
+
extern uschar *prvscheck_address; /* Set during prvscheck expansion item */
extern uschar *prvscheck_keynum; /* Set during prvscheck expansion item */
extern uschar *prvscheck_result; /* Set during prvscheck expansion item */