#ifdef SUPPORT_TLS
extern int tls_client_start(int, host_item *, address_item *, uschar *,
uschar *, uschar *, uschar *, uschar *, uschar *, uschar *,
#ifdef SUPPORT_TLS
extern int tls_client_start(int, host_item *, address_item *, uschar *,
uschar *, uschar *, uschar *, uschar *, uschar *, uschar *,