HTTPSProxy
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 HTTPSProxy to the full URL address of your proxy server, Movable Type will route all HTTP requests for secure (https://) URLs through the proxy server specified.
Default value: none
Example:
HTTPSProxy http://192.168.10.5:3128