Dyndns.com External Internet Provider Address Error

00:21:37 - [REGIONMODULE]: Adding scene Shengqu to shared module RemoteSimulationConnectorModule
00:21:37 - [UTIL]: An error occurred while resolving host name http://refael.dyndns-work.com, System.Net.Sockets.SocketException: No such host is known
  at System.Net.Dns.hostent_to_IPHostEntry (System.String h_name, System.String[] h_aliases, System.String[] h_addrlist) [0x00000] in <filename unknown>:0
  at System.Net.Dns.GetHostByName (System.String hostName) [0x00000] in <filename unknown>:0
  at System.Net.Dns.GetHostEntry (System.String hostNameOrAddress) [0x00000] in <filename unknown>:0
  at OpenSim.Framework.Util.GetHostFromDNS (System.String dnsAddress) [0x00000] in <filename unknown>:0
00:21:37 - [APPLICATION]:
APPLICATION EXCEPTION DETECTED: System.UnhandledExceptionEventArgs

Exception: System.Net.Sockets.SocketException: No such host is known
  at System.Net.Dns.hostent_to_IPHostEntry (System.String h_name, System.String[] h_aliases, System.String[] h_addrlist) [0x00000] in <filename unknown>:0
  at System.Net.Dns.GetHostByName (System.String hostName) [0x00000] in <filename unknown>:0
  at System.Net.Dns.GetHostEntry (System.String hostNameOrAddress) [0x00000] in <filename unknown>:0
  at OpenSim.Framework.Util.GetHostFromDNS (System.String dnsAddress) [0x00000] in <filename unknown>:0

Application is terminating: True