extern uschar *auth_xtextencode(uschar *, int);
extern int auth_xtextdecode(uschar *, uschar **);
-extern gstring *authres_smtpauth(gstring *);
-#ifdef SUPPORT_SPF
-extern gstring *authres_spf(gstring *);
+#ifdef EXPERIMENTAL_ARC
+extern gstring *authres_arc(gstring *);
#endif
#ifndef DISABLE_DKIM
extern gstring *authres_dkim(gstring *);
#endif
-#ifdef EXPERIMENTAL_ARC
-extern gstring *authres_arc(gstring *);
+#ifdef EXPERIMENTAL_DMARC
+extern gstring *authres_dmarc(gstring *);
+#endif
+extern gstring *authres_smtpauth(gstring *);
+#ifdef SUPPORT_SPF
+extern gstring *authres_spf(gstring *);
#endif
extern uschar *b64encode(uschar *, int);