uschar *dmarc_exim_expand_query(int);
uschar *dmarc_exim_expand_defaults(int);
uschar *dmarc_auth_results_header(header_line *,uschar *);
-int dmarc_write_history_file();
+static int dmarc_write_history_file();
#define DMARC_AR_HEADER US"Authentication-Results:"
#define DMARC_VERIFY_STATUS 1