extern int auth_cyrus_sasl_server(auth_instance *, uschar *);
extern int auth_cyrus_sasl_client(auth_instance *, void *, int, uschar *, int);
extern int auth_cyrus_sasl_server(auth_instance *, uschar *);
extern int auth_cyrus_sasl_client(auth_instance *, void *, int, uschar *, int);