Microsoft FTP server handles local FTP connections idiosyncratically

Product: IIS, Microsoft FTP Server (need version)

Detailed Description:

Connections to local FTP server behave differently from remote connections. With local connections Microsoft FTP server requires that data socket has the same ip address string as control connection. This means that data port should be specified as 127.0.0.1.x.y, which we don't do because we specify the actual ip address. For local data transfers the workaround is to use passive mode. Direct server-to-server transfers are not possible with Microsoft FTP server

Better Workaround: Don't use Microsoft FTP Server