extern void auth_plaintext_init(auth_instance *);
extern int auth_plaintext_server(auth_instance *, uschar *);
-extern int auth_plaintext_client(auth_instance *, smtp_inblock *,
- smtp_outblock *, int, uschar *, int);
+extern int auth_plaintext_client(auth_instance *, void *, int, uschar *, int);
/* End of plaintext.h */