IP Deny Manager

[footballkicks]

Hi, I have used the IP Deny Manager in the past to block unwanted sites linking to me in the past. I tried to use the IP Deny Manager to block another unwanted site, but a message of "Sorry. you did not enter a valid ip address, or the domainname you entered could not be resolved to an ip address!" was then displayed. Could any one please help me on this?

Thanks.