This is documentation about a configuration directive, which can be placed within Movable Type’s core configuration file,
mt-config.cgi, to customize the behavior of the system.
In some cases, a proxy server must be used to gain access to the internet if the computer Movable Type is running on is behind a firewall or on an internal private network. By setting PingProxy to the full URL address of your proxy server, Movable Type will route all Trackback and update pings through the proxy server specified.
Default value: none