Error to connect to FTP Server

Hi All,
I am using other product to connect to my SFTP server.

I am trying to connect to one of my SFTP server but I am getting this error message
Command: open "<Username>@mywebsite.com@sftp.test.com@sftp.test.com"22
Error : ssh_init: Host Does not exist
Error : Could not connect to server


The strange thing is that the sftp.test.com appears TWICE. I am not sure y this is appearing twice but I feel this could be the reason y SFTP is not connecting to server. All the fields "Host, Username and Password" are perfect.

I haven't tried any other software yet.

Any clue y this happening??
Any work around for time being?

Thanks in advance

Regards
Aravind

Try to change DNS ip address