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	Common Error Messages - FTP Return Codes

Solution Error: 202/502 - Command not Implemented

You will see 202/502 if A) the server does not support the command, or B) the command is not enabled on the server. With Titan, you can disable commands such as PASV, MTDM, SITE PSWD; in which case Titan will return a 502 to the client.

Error: 425 - Unable to open data connection

You will see 425 when Titan or WebDrive is unable to open a Data Connection to the server. The Data Connection is used to transfer files and directory information between the Server and Client. If you see this error, 99.999% of the time it is because there is a firewall between the client and server and the client is not in PASV mode or your firewall has not been configured to do port forwarding correctly.

Error: 450 - Requested action not taken, file unavailable/451 - Requested action aborted: local error in processing.

You may see a 450/451 if the client attempts to upload a file to the server and the filename contains an invalid character such as ':' or '%'. This happens when the client is either MAC or Unix.

Error: 452 - Requested action not taken. Insufficient storage in system or quota exceeded/552 - Requested file action aborted, exceeded users storage allocation

You will see a 452/552 if the Titan server has Quotas enabled the the client user has exceeded their storage allocations.

Error: 500 - command not understood/501 - Syntax error in parameters or arguments.

You will see 500/501 if the user specifies an invalid FTP command.

Error: 503 - Bad sequence of commands

You will see a 503 if the user issues commands to Titan out of sequence. For instance, the ftp client must send USER before sending the PASS command. If they send PASS without USER, then 503 will result.

Error: 530 - Not logged in.

You will see a 530 if you connect to Titan and attempt to peform actions before logging in. If you connect and try to do a CWD or PWD, you will get a 530 because you need to login with USER/PASS first.

Error: 550 - Requested action not taken, file not found or no access.

You will see this one often. This error happens for a few different reasons:
A) if the file does not exist on the server, you will see this error. ie, if they try to delete a non-existent file. B) if they do not have permission to perform the operation. Ie, they try to CWD /fred/ and they do not have proper rights to the /fred/ folder (or /fred/ does not exist).

Error: 553 - File name not allowed, or file type banned.

You will see this if Titan has Banned File Types enabled and the user attempts to upload a file that is not permitted on the server.

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Mar 16 2005 06:18 AM