[net] Unable to connect FTPS server

[Dorairaj M]

Hi,

Could not able to connect to FileCopa server by using commons-net-3.3 jar but 
connecting from FileZilla FTP client.

When connecting to explicit FTPS from java client then output as

220-InterVations FileCOPA FTP Server Version 9.01 11th December 2014
Trial Version. 25 days remaining
220 while connect to Dhorrairaaj ftp server
AUTH TLS
224 Authenticating with TLS


When connecting to implicit FTPS from java client then output as

220-InterVations FileCOPA FTP Server Version 9.01 11th December 2014
Trial Version. 25 days remaining
220 while connect to Dhorrairaaj ftp server
USER clinapps
331 Password required for clinapps
PASS clinappsftp
500  is not understood


Can anybody please let me know the reason why unable to connect from 
commons-net-3.3 api,

protected void execAUTH() throws SSLException, IOException {
        int replyCode = sendCommand(CMD_AUTH, auth);
        if (FTPReply.SECURITY_MECHANISM_IS_OK == replyCode) {
            // replyCode = 334
            // I carry out an ADAT command.
        } else if (FTPReply.SECURITY_DATA_EXCHANGE_COMPLETE != replyCode) {
            throw new SSLException(getReplyString());
        }
    }

As per the above source code, exception is due to the response code 224 (224 
Authenticating with TLS) , Intentionally throwing exception, is this cause to 
any configuration related issues?

Help is greatly appreciated!!..

I am using window7 OS

Thanks
Dhorrairaajj
+91 9885412626