This will most often mean that you have been blocked by our server's firewall software.
The most common reason you might get blocked is because you tried to guess your cpanel password or email password.
The server will see this as somebody trying to hack into your account and will block the IP to protect your account. Just like a home alarm system, if you try to break in, it can't tell the difference between you and the bad guys.
Please send us your public IP address by using www.whatismyip.com
If you ever need to confirm that the server is indeed up and running, you can use either of the below websites -
http://downforeveryoneorjustme.com/
It will be very uncommon for the server to be down. Out uptime is very close to 100%.