Apache Reference: http_core, ServerSignature
Control Server Signature
Syntax: ServerSignature A
Example: ServerSignature on
Since: Apache 1.3
This directive allows the configuration of a trailing footer
line under server-generated documents (error messages, mod_proxy
ftp directory listings, mod_info output, and so on. In a chain
of proxies, the user often cannot tell which of the chained
servers actually produced a returned error message; a footer
line overcomes this problem. A type argument of ``off'',
which is the default, suppresses the error line. The value
``on'' adds a line with the server version number and
ServerName of the serving virtual host. The value ``email''
also creates a ``mailto:'' reference to the ServerAdmin of
the referenced document.