FTP Error 425: Data Connection Could Not Be Established

This occurs when there is a problem establishing the data connection between the client and server.

The response to the PASV command may contain an incorrect IP address for the server. You can verify this by outputting the parameters of the PITrail event and checking the server's response to the PASV command.

You can work around this by forcing the component to use the address supplied in the RemoteHost property for the data connection, ignoring the IP address returned by the server.

To do this, set the UseRemoteHostAddressForPassive configuration property:

FTP.Config("UseRemoteHostAddressForPassive=true")

Note: Even with this setting, a connection might still fail for other reasons. In passive mode, if the component cannot connect to the IP address and port specified, no data connection will be established.