Problem in connecting to the ftp server

I had a Linux system and I tried to ftp to the server. I was getting the following error: 

Connected to site.com.
220 ns1.site.com FTP server (Version 5.60) ready.
User (site.com:(none)): user
530 Must perform authentication before identifying USER.
Login failed.
ftp> bye
221 Goodbye.

To resolve the problem I updated the entry in the /etc/xinit.d/gssftp file. I located the entry server_args = -l -a  and removed -a option. Then I issued the following command.

service xinetd restart

This solved the problem.