The ServerName property returns the fully
qualified domain name assigned to the server. This consists of the local
computer name and its domain name. The actual value returned depends
on the system configuration. If no domain has been specified for the
system, then only the machine name will be returned.
Setting this property assigns the default hostname for the server
which is returned to the client in the standard response header block.
If the server is publicly accessible over the Internet, this property
should be set to the same hostname that is associated with the server
Attempting to change the value of this property after the server
has started will cause an exception to be raised. To change this
property value, you must first call the Stop
method which will terminate all active client connections.