type t = private {}include sig ... endval bin_t : t Bin_prot.Type_class.tval bin_read_t : t Bin_prot.Read.readerval __bin_read_t__ : (int ‑> t) Bin_prot.Read.readerval bin_reader_t : t Bin_prot.Type_class.readerval bin_size_t : t Bin_prot.Size.sizerval bin_write_t : t Bin_prot.Write.writerval bin_writer_t : t Bin_prot.Type_class.writerval bin_shape_t : Bin_prot.Shape.tval t_of_sexp : Base.Sexp.t ‑> tval sexp_of_t : t ‑> Base.Sexp.tval code : t ‑> intval service_ready_220 : string ‑> tval closing_connection_221 : tval authentication_successful_235 : tval ok_completed_250 : string ‑> tval start_authentication_input_334 : string ‑> tval start_mail_input_354 : tval local_error_451 : string ‑> tval message_rate_exceeded_452 : tval unable_to_accommodate_455 : string ‑> tval command_not_recognized_500 : string ‑> tval syntax_error_501 : string ‑> tval command_not_implemented_502 : Async_smtp.Smtp_command.t ‑> tval bad_sequence_of_commands_503 : Async_smtp.Smtp_command.t ‑> tval authentication_required_530 : tval authentication_credentials_invalid_535 : tval exceeded_storage_allocation_552 : tval transaction_failed_554 : string ‑> tval from_to_parameters_bad_555 : string ‑> tval is_ok : t ‑> boolval is_permanent_error : t ‑> boolval to_string : t ‑> stringval of_string : string ‑> tval of_bigstring : Core.Bigstring.t ‑> t