Cannot Connect - connection closed by remote host?

Hi,

Can someone tell me what all this means in my log? & what i need to do to get up & running again?..... thanks.



[12:53:14] PASS (hidden)
[12:53:14] 530 Not logged in.
[12:53:14] Active Help: https://www.smartftp.com/support/kb/51
[12:53:14] QUIT
[12:53:14] 221 Goodbye, closing session.
[12:53:14] An existing connection was forcibly closed by the remote host.
[12:53:15] Connect failed. Waiting to retry (30s)...
[12:53:15] Client closed the connection.
[12:53:45] Connection attempt 21...
[12:53:45] Resolving host name "www.williamsinternational.com.au"
[12:53:45] Connecting to 118.127.5.100 Port: 21
[12:53:45] Connected to www.williamsinternational.com.au.
[12:53:45] 220 Serv-U FTP Server v7.2 ready...
[12:53:45] USER williamsinternational
[12:53:45] 331 User name okay, need password.
[12:53:45] PASS (hidden)
[12:53:47] 530 Not logged in.
[12:53:47] Active Help: https://www.smartftp.com/support/kb/51
[12:53:47] QUIT
[12:53:47] 221 Goodbye, closing session.
[12:53:47] An existing connection was forcibly closed by the remote host.
[12:53:47] Connect failed. Waiting to retry (30s)...
[12:53:47] Client closed the connection.
[12:54:17] Connection attempt 22...
[12:54:17] Resolving host name "www.williamsinternational.com.au"
[12:54:17] Connecting to 118.127.5.100 Port: 21
[12:54:17] Connected to www.williamsinternational.com.au.
[12:54:17] 220 Serv-U FTP Server v7.2 ready...
[12:54:17] USER williamsinternational
[12:54:17] 331 User name okay, need password.
[12:54:17] PASS (hidden)
[12:54:17] 530 Not logged in.
[12:54:17] Active Help: https://www.smartftp.com/support/kb/51
[12:54:17] QUIT
[12:54:17] 221 Goodbye, closing session.
[12:54:17] An existing connection was forcibly closed by the remote host.
[12:54:17] Connect failed. Waiting to retry (30s)...
[12:54:17] Client closed the connection.
[12:54:47] Connection attempt 23...
[12:54:47] Resolving host name "www.williamsinternational.com.au"
[12:54:47] Connecting to 118.127.5.100 Port: 21
[12:54:47] Connected to www.williamsinternational.com.au.
[12:54:47] 220 Serv-U FTP Server v7.2 ready...
[12:54:47] USER williamsinternational
[12:54:47] 331 User name okay, need password.
[12:54:47] PASS (hidden)
[12:54:47] 530 Not logged in.
[12:54:47] Active Help: https://www.smartftp.com/support/kb/51
[12:54:47] QUIT
[12:54:47] 221 Goodbye, closing session.
[12:54:48] An existing connection was forcibly closed by the remote host.
[12:54:48] Connect failed. Waiting to retry (30s)...
[12:54:48] Client closed the connection.

Username/password is incorrect or there is a problem on the server side. Please contact your web hosting provider for assistance
[12:54:47] USER williamsinternational
[12:54:47] 331 User name okay, need password.
[12:54:47] PASS (hidden)
[12:54:47] 530 Not logged in.


Regards,
Mat