When my customers are trying to transfer the files through ftp system, they are getting this error. It seems like the ftp connection is established however because of some unknown reasons the data is not transferring. This is a connection from VMS system to a Unix server.
230 User 1234567 logged in
bin
200 PORT command successful.
hash
Hash mark printing on (1024/hash mark).
put abc.str
200 PORT command successful.
150 Opening BINARY mode data connection for abc.str
%TCPIP-E-FTP_DATACONF, cannot establish data connection with remote host
-SYSTEM-F-REJECT, connect to network object rejected
226 Transfer complete.
421 Service not available, Remote server has closed the connection