In order for a web browser to use iRejectTrash, its HTTP proxy
server settings must be hosted at 127.0.0.1 (localhost), port 4128 (or whatever TCP port is
listed on the Proxy Settings dialog).
If you are already using a proxy server, you may also have to instruct
iRejectTrash to use that server as a next-hop proxy.
You can set next-hop proxy server settings on the Proxy Settings dialog.