FTP.exe in DOS - "connection closed by remote host"

Dear friends,


This is Daniel here just joined your group.
My system is Win Xp os and want to upload files in dos to an ftp server



I am trying to upload files to a ftp server located at another location



from my client system. I use the FTP program in the DOS prompt. I do
the following.


C:\>ftp
ftp> open myserver.com
Connected to myserver.com.
220 194.55.26.100 FTP server ready
User (myserver.com:(none)):myusername
331 Password required for myusername.
Password:
230 User myusername logged in.
ftp>send filename.zip
(aftersometime I am getting the message)
Connection closed by remote host
ftp> dir
not connected


If I am trying to send small files I am able to transfer. If I leave
the session for some time idle then the session closes automatically.


I am able to transfer large without any difficulty from the Windows
Explorer from my system to the FTP server.


Can anyone please help me out please.
I am very desperately in need and it is very urgent as I have created
dos batch files to operate from different location to upload files
automatically.


When I try this from another system from office even then it is not
working I get the same error message.


Expecting your valuable help.


Thanks in advance for the help.


Thanks
Dani