Altiris Client Install but not Reporting Altiris Console

Hello,

I have installed Altiris Client one of windows xp machine but Altiris client are not showing Altiris Console.

I have received below error

Apr 13 12:22:25    ConfigServer    AeXNSAgent.exe    RequestPolicies failed: Unexpected response from URL http://Server name/Altiris/NS/Agent/GetClientPolicies.aspx: The specified host resource has been blacklisted (-2147217405)    AeXNSAgent.exe
 

I have found one of artical TECH127475 but I have received Error (SymWISE Support site is temporarily unavailable due to scheduled system maintenance)