Thank you; here I am sending you the WhireShark log.
Let me clarify something. My ftp client first is asking to the server the file size of a possible file that already exists on target folder. In returns a size of 1300 bytes, and this is from the file that failled in the previous intent. So the client ftp will try to delete it, and then it will try to send.
Let me clarify something. My ftp client first is asking to the server the file size of a possible file that already exists on target folder. In returns a size of 1300 bytes, and this is from the file that failled in the previous intent. So the client ftp will try to delete it, and then it will try to send.

