I can not access Dell Linux Repo

Dell R620

CentOS 7

when i tried to install dell_ft_install. dell refused my connections.

why?

my server is in IDC - gabia.com

How can I access linux.dell.com ???

# yum install dell_ft_install
Loaded plugins: fastestmirror, langpacks
base                                                                                   | 3.6 kB  00:00:00    
Could not retrieve mirrorlist http://linux.dell.com/repo/hardware/latest/mirrors.cgi?osname=el7&basearch=x86_64&native=1 error was
14: curl#56 - "Recv failure: 연결이 상대편에 의해 끊어짐"