extern BOOL tls_smtp_buffered(void);
extern int tls_ungetc(int);
extern int tls_write(const uschar *, size_t);
+extern uschar *tls_validate_require_cipher(void);
extern void tls_version_report(FILE *);
#ifndef USE_GNUTLS
extern BOOL tls_openssl_options_parse(uschar *, long *);