If the error is not listed below, you can usually type it here and locate the information

If an error occurs during any operation, a numeric value from the following table will be returned:

 

10000	user cancelled a dialog or progress.
10001	unimplemented Internet command.
10002	invalid array type.
10003	no more (TCP,SMTP,POP3, etc. ) references available.
10004	invalid reference.
10005	need a "Host" for use in the "SMTP_Send" command.
10006	need a "From" for use in the "SMTP_Send" command.
10007	need a recipient for use in the "SMTP_Send" command.
10008	already logged in.
10009	error trying to make a POP3 connection.
10010	error with POP3 USER.
10011	error with POP3 PASS.
10012	error with POP3 QUIT.
10013	error with POP3 STAT.
10014	error with POP3 LIST.
10015	error with POP3 UIDL.
10016	error with POP3 DELE.
10017	error with POP3 RSET.
10018	invalid message number.
10019	invalid character offset.
10020	invalid character length.
10021	error with POP3 RETR.
10022	field was not found in mail Header.
10023	no attachments found.
10024	error in processing BinHex.
10025	BinHex checksum error.
10026	Internet commands unavailable. Probably because MacTCP is not installed
10027	Connection no longer exists
10028	Exceeded 32k limit
10029	Error with POP3 NOOP
10030	POP3 session was closed by the server
10031	Error with POP3 APOP
10032	Unknown or invalid response.
10033	SMTP 421 - Service not available, closing transmission channel.
10034	SMTP 450 - Requested mail action not taken: mailbox unavailable.
10035	SMTP 451 - Requested action aborted: local error in processing.
10036	SMTP 452 - Requested action not taken: insufficient system storage.
10037	SMTP 500 - Syntax error, command unrecognized.
10038	SMTP 501 - Syntax error in parameters or arguments.
10039	SMTP 502 - Command not implemented.
10040	SMTP 503 - Bad sequence of commands.
10041	SMTP 504 - Command parameter not implemented.
10042	SMTP 550 - Requested action not taken: mailbox unavailable.
10043	SMTP 551 - User not local; please try <forward-path>.
10044	SMTP 552 - Requested mail action aborted: exceeded storage allocation.
10045	SMTP 553 - Requested action not taken: mailbox name not allowed.
10046	SMTP 554 - Transaction failed.
10047	FTP 421 - Service not available, closing control connection.
10048	FTP 425 - Can't open data connection.
10049	FTP 426 - Connection closed; transfer aborted.
10050	FTP 450 - Requested file action not taken. File unavailable (e.g.,file busy).
10051	FTP 451 - Requested action aborted: local error in processing.
10052	FTP 452 - Requested action not taken. Insufficient storage space in system.
10053	FTP 500 - Syntax error, command unrecognized.
10054	FTP 501 - Syntax error in parameters or arguments.
10055	FTP 502 - Command not implemented.
10056	FTP 503 - Bad sequence of commands.
10057	FTP 504 - Command not implemented for that parameter.
10058	FTP 530 - Not logged in.
10059	FTP 532 - Need account for storing files.
10060	FTP 550 - Requested action not taken. File unavailable (e.g., file not found, no access).
10061	FTP 551 - Requested action aborted: page type unknown.
10062	FTP 552 - Requested file action aborted. Exceeded storage allocation (for current directory
	or dataset).
10063	FTP 553 - Requested action not taken. File name not allowed.
10064	No response has been received within the given timeout period.
10065	Not an FTP file.
10066	Error in processing Base64.
10067	Error in processing AppleSingle.
10068	Error in processing Quoted-Printable.
10069	FTP session was closed by the server.
10070	Not an FTP directory.
10071	TCP session was closed by the server
10072	Invalid encode kind
10073	Invalid decode kind
10074	An asynchronous DNR call did not complete
10075	An asynchronous OpenTransport call did not complete
10076	OpenTransport bind failed
10077	OpenTransport connect failed
10078	Maximum MacTCP streams reached
10079	Error in processing uuencode
10080	Cannot load ICMP library
10081	Error in processing MacBinary
10082	MacBinary checksum error
10083	Could not open a file
10084	No FTP information received
10085	Unknown FTP information received
10086	Proxy connection failed
10087	Standard file I/O error
10088	FTP reentrant error
10089	SLI.DLL is not loaded
10091	Error trying to make an IMAP connection
10092	A maibox is not selected
10093	Invalid message part
10094	Error with IMAP LOGIN
10095	Error with IMAP LOGOUT
10096	Error with IMAP CAPABILITY
10097	Error with IMAP SELECT
10098	Error with IMAP FETCH
10099	Error with IMAP PARTIAL
10100	Error with IMAP STORE
10101	Error with IMAP EXPUNGE
10102	Error with IMAP SEARCH
10103	Error with IMAP COPY
10104	Error with IMAP CREATE
10105	Error with IMAP DELETE
10106	Error with IMAP RENAME
10107	Error with IMAP SUBSCRIBE
10108	Error with IMAP UNSUBSCRIBE
10109	Error with IMAP LIST
10110	Error with IMAP LSUB
10111	Error with IMAP STATUS
10112	Error with IMAP CLOSE

Open Transport Error Codes

 

-3211	Open Transport Out of Memory
-3201	Open Transport Not Found
-3216	Open Transport duplicate found
-3150	A Bad address was specified
-3151	A Bad option was specified
-3152	Missing access permission
-3153	Bad provider reference
-3154	No address was specified
-3155	Call issued in wrong state
-3156	Sequence specified does not exist
-3157	A system error occurred
-3158	An event occurred - call Look()
-3159	An illegal amount of data was specified
-3160	Passed buffer not big enough
-3161	Provider is flow-controlled
-3162	No data available for reading
-3163	No disconnect indication available
-3164	No Unit Data Error indication available
-3165	A Bad flag value was supplied
-3166	No orderly release indication available
-3167	Command is not supported
-3168	State is changing - try again later
-3169	Bad structure type requested for OTAlloc
-3170	A bad endpoint name was supplied
-3171	A Bind to an in-use addr with qlen > 0
-3172	Address requested is already in use
-3173	Accept failed because of pending listen
-3174	Tried to accept on incompatible endpoint
-3175	kOTResQLenErr
-3176	kOTResAddressErr
-3177	kOTQFullErr
-3178	An unspecified provider error occurred
-3179	A synchronous call at interrupt time
-3180	The command was cancelled
-3200	Permission denied
-3201	No such file or directory
-3202	No such resource
-3203	Interrupted system service
-3204	I/O error
-3205	No such device or address
-3208	Bad file number
-3210	Try operation again later
-3211	Not enough space
-3212	Permission denied
-3213	Bad address
-3215	Device or resource busy
-3216	File exists
-3218	No such device
-3221	Invalid argument
-3224	Not a character device
-3231	Broken pipe
-3233	Message size too large for STREAM
-3234	Call would block, so was aborted
-3234	or a deadlock would occur
-3236	kEALREADYErr
-3237	Socket operation on non-socket
-3238	Destination address required
-3239	Message too long
-3240	Protocol wrong type for socket
-3241	Protocol not available
-3242	Protocol not supported
-3243	Socket type not supported
-3244	Operation not supported on socket
-3247	Address already in use
-3248	Can't assign requested address
-3249	Network is down
-3250	Network is unreachable
-3251	Network dropped connection on reset
-3252	Software caused connection to abort
-3253	Connection reset by peer
-3254	No buffer space available
-3255	Socket is already connected
-3256	Socket is not connected
-3257	Can't send after socket shutdown
-3258	Too many references: can't splice
-3259	Connection timed out
-3260	Connection refused
-3263	Host is down
-3264	No route to host
-3269	kEPROTOErr
-3270	kETIMEErr
-3271	kENOSRErr
-3272	kEBADMSGErr
-3273	kECANCELErr
-3274	kENOSTRErr
-3275	kENODATAErr
-3276	kEINPROGRESSErr
-3277	kESRCHErr
-3278	kENOMSGErr
-3279	kOTClientNotInittedErr
-3280	kOTPortHasDiedErr
-3281	kOTPortWasEjectedErr
-3282	kOTBadConfigurationErr
-3283	kOTConfigurationChangedErr
-3284	kOTUserRequestedErr
-3285	kOTPortLostConnection

MacTCP & Miscellaneous Error Codes

Compatibility note: Some of these error codes are no longer useful since MacTCP is no longer supported starting from 4D Internet Commands version 6.8.1.

 

-33	Unable to write to the disk. The File Directory is full.
-34	Unable to write to the disk. The disk is full.
-35	No such volume.
-36	I/O error.
-37	Bad file name or volume name.
-38	File is not open for reading or writing.
-39	Unable to read from the file. The end of file was reached.
-42	Unable to continue because too many files are open.
-43	The file cannot be found.
-44	The volume is locked at the hardware level.
-45	The file is locked.
-46	The volume is locked at the software level.
-47	One or more files are already open by another application.
-48	A file with this name already exists.
-49	File already open with write permission.
-54	Permissions error on opened file.
-57	Not a Macintosh volume.
-59	An error occured while trying to rename the file.
-61	Write permissions error.
-108	Insufficient amount of memory.
-120	Directory not found.
-23000	Unable to initialize the local network handler.
-23001	The manually set address is configured improperly.
-23002	A configuration resource is missing.
-23003	Not enough room in the application heap to load MacTCP.
-23004	Error in getting an address from a server or the address is already in use by another
	machine.
-23005	A TCPClose command was already issued so there is no more data to send on this
	connection.
-23006	The total amount of data described by the WDS was either 0 or greater than 65,535 bytes.
-23007	The TCP or UDP stream already has an open connection.
-23008	This TCP stream has no open connection.
-23009	Maximum TCP or UDP streams are already open.
-23010	The specified TCP or UDP stream is not open.
-23011	An open stream is already using this receive buffer area.
-23012	The TCP connection was broken.
-23013	The receive buffer area pointer is 0.
-23014	Invalid RDS or WDS buffers.
-23015	The connection came halfway up and then failed.
-23016	The specified command action was not completed in the specified time period.
-23017	A stream is already open using this local UDP port or a TCP connection already exists
	between this local IP address and TCP port, and the specified remote IP address and TCP
	port.
-23032	The packet is too large to send without fragmenting and the Don't Fragment flag is set.
-23033	The destination host is not responding to address resolution requests.
-23035	The icmp echo packet was not responded to in the indicated timeout period.
-23036	Insufficient internal driver buffers available to fragment this packet on send.
-23037	No gateway available to manage routing of packets to off-network destinations.
-23041	The hostName field had a syntax error. The address was given in dot notation (that is,
	W.X.Y.Z) and did not conform to the syntax for an IP address.
-23042	The name specified cannot be found in the cache. The domain name resolver will now
	query the domain name server and return the answer in the call-back procedure.
-23043	No result procedure is passed to the address translation call when the resolver must be
	used to find the address.
-23044	No name server can be found for the specified name string.
-23045	This domain name does not exist.
-23046	None of the known name servers are responding.
-23047	The domain name server has returned an error.
-23048	Not enough memory is available to issue the needed DNR query or to build the DNR
	cache.

Outlook Express error codes

0×800CCC00 LOAD_SICILY_FAILED Authentication did not load.
0×800CCC01 INVALID_CERT_CN Invalid certificate content.
0×800CCC02 INVALID_CERT_DATE Invalid certificate date.
0×800CCC03 ALREADY_CONNECTED User already connected.
0×800CCC04 CONN
0×800CCC05 NOT_CONNECTED Not connected to server.
0×800CCC06 CONN_SEND
0×800CCC07 WOULD_BLOCK
0×800CCC08 INVALID_STATE
0×800CCC09 CONN_RECV
0×800CCC0A INCOMPLETE Message download incomplete.
0×800CCC0B BUSY Server or maildrop is busy.
0×800CCC0C NOT_INIT
0×800CCC0D CANT_FIND_HOST Cannot locate server.
0×800CCC0E FAILED_TO_CONNECT Cannot connect to server.
0×800CCC0F CONNECTION_DROPPED Connection closed.
0×800CCC10 INVALID_ADDRESS Address not known on server.
0×800CCC11 INVALID_ADDRESS_LIST Mailing list not known on server.
0×800CCC12 SOCKET_READ_ERROR Unable to send Winsock request.
0×800CCC13 SOCKET_WRITE_ERROR Unable to read Winsock reply.
0×800CCC14 SOCKET_INIT_ERROR Unable to initialize Winsock.
0×800CCC15 SOCKET_CONNECT_ERROR Unable to open Windows Socket.
0×800CCC16 INVALID_ACCOUNT User account not recognized.
0×800CCC17 USER_CANCEL User canceled operation.
0×800CCC18 SICILY_LOGON_FAILED Logon attempt failed.
0×800CCC19 TIMEOUT
0×800CCC1A SECURE_CONNECT_FAILED Unable to connect using SSL
 

 

-10004	Blocking call cancelled
-10013	Permission denied
-10014	Bad address
-10022	Invalid argument
-10024	No more sockets available
-10035	Non-blocking socket would block
-10036	Illegal WinSock function invoked while a blocking function is in progress
-10037	An attempt was made to cancel an asynchronous operation that has already completed
-10038	Specified socket descriptor is not valid for this application
-10039	Destination address was required but none was supplied to the function
-10040	Datagram too large for buffer
-10041	Specified protocol does not match the other parameters in the call
-10042	Protocol option is unknown or invalid
-10043	Specified protocol is not supported by the Windows Sockets implementation
-10044	Specified socket type is not supported by the specified address family
-10045	Socket does not support the specified operation
-10046	Protocol family not supported
-10047	Specified address family is not supported by the Windows Sockets implementation or
	cannot be used with the indicated socket
-10048	Specified address is already in use
-10049	Specified address is not available from the local machine
-10050	Problem with the network subsystem
-10051	Network cannot be reached from this host at this time
-10052	Connection was dropped and must be reset
-10053	Connection was aborted because of a timeout or other error condition
-10054	Connection was reset by the remote host
-10055	Windows Sockets implementation is out of buffer space or the space provided in an API
	call by the application was too small to hold the requested information
-10056	Specified socket is already connected
-10057	Specified socket is not connected
-10058	Socket has had the requested functionality shut down
-10060	Connection attempt timed out before the connection could be established
-10061	Connection attempt was forcefully rejected
-10091	Network subsystem is not yet ready for communication
-10092	Windows Sockets DLL does not support the requested Winsock protocol version
-10093	Windows Sockets not initialized
-11001	Requested database information does not exist; as confirmed by an authoritative host
-11002	Requested information was not found but the answer was not authoritative
-11003	Non-recoverable error occurred
-11004	Name supplied was valid but no information of the requested type is in the database

SMTP RFC Values

The following items are not error codes returned by any of the external commands. These are response codes which the SMTP protocol has defined to communicate various states during client-server communication. Developers may find this list useful if they are writing their own mail communication procedures using low-level TCP commands.

 

211	System status, or system help reply
214	Help message [Information on how to use the receiver or the meaning of a particular
	non-standard command; this reply is useful only to the human user]
220	<domain> Service ready
221	<domain> Service closing transmission channel
250	Requested mail action okay, completed
251	User not local; will forward to <forward-path>
354	Start mail input; end with <CRLF>.<CRLF>
421	<domain> Service not available, closing transmission channel [This may be a reply to
	any command if the service knows it must shut down]
450	Requested mail action not taken: mailbox unavailable [e.g., mailbox busy]
451	Requested action aborted: local error in processing
452	Requested action not taken: insufficient system storage
500	Syntax error, command unrecognized [This may include errors such as command line
	too long]
501	Syntax error in parameters or arguments
502	Command not implemented
503	Bad sequence of commands
504	Command parameter not implemented
550	Requested action not taken: mailbox unavailable [e.g., mailbox not found, no access]
551	User not local; please try <forward-path>
552	Requested mail action aborted: exceeded storage allocation
553	Requested action not taken: mailbox name not allowed [e.g., mailbox syntax incorrect]
554	Transaction failed

FTP RFC Values

The following items are not error codes returned by any of the external commands. These are response codes which the FTP protocol has defined to communicate various states during client-server communication. Developers may find this list useful when writing their own file transfer procedures using low-level TCP commands.

 

110	Restart marker reply. In this case, the text is exact and not left to the particular
	implementation; it must read:
	MARK yyyy = mmmm
	Where yyyy is User-process data stream marker, and mmmm server's equivalent
	marker (note the spaces between markers and "=").
120	Service ready in nnn minutes.
125	Data connection already open; transfer starting.
150	File status okay; about to open data connection.
200	Command okay.
202	Command not implemented, superfluous at this site.
211	System status, or system help reply.
212	Directory status.
213	File status.
214	Help message on how to use the server or the meaning of a particular non-standard
	command. This reply is useful only to the human user.
215	NAME system type. Where NAME is an official system name from the list in the
	Assigned Numbers document.
220	Service ready for new user.
221	Service closing control connection. Logged out if appropriate.
225	Data connection open; no transfer in progress.
226	Closing data connection. Requested file action successful (e.g., file transfer or file
	abort).
227	Entering Passive Mode (h1,h2,h3,h4,p1,p2).
230	User logged in, proceed.
250	Requested file action okay, completed.
257	"PATHNAME" created.
331	User name okay, need password.
332	Need account for login.
350	Requested file action pending further information.
421	Service not available, closing control connection. This may be a reply to any command if
	the service knows it must shut down.
425	Can't open data connection.
426	Connection closed; transfer aborted.
450	Requested file action not taken. File unavailable (file busy).
451	Requested action aborted: local error in processing.
452	Requested action not taken. Insufficient storage space in system.
500	Syntax error, command unrecognized. This may include errors such as command line
	too long.
501	Syntax error in parameters or arguments.
502	Command not implemented.
503	Bad sequence of commands.
504	Command not implemented for that parameter.
530	Not logged in.
532	Need account for storing files.
550	Requested action not taken. File unavailable (e.g., file not found, no access).
551	Requested action aborted: page type unknown.
552	Requested file action aborted. Exceeded storage allocation (for current directory or
	dataset).
553	Requested action not taken. File name not allowed.