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 */
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 */