System.Net.Dns.GetHostName() returning dot

System.Net.Dns.GetHostName() is returning the dot character instead of the machine name.  I need it to return the machine name so that it matches up with what is in sql server.  Is there any way to control this?

msg.HostName = System.Net.Dns.GetHostName(); //Environment.MachineName;  this was returning . for some reason

thanks

scott