----- Original Message -----
From: "Jimmy Hess" <mysidia@gmail.com>
This could be a useful proactive countermeasure against the UIT (Unintentional Insider Threat); of employees inappropriately entering corporate e-mail credentials into a known third party service with outside of organizational control.
Alas, it can't. Using it against LI would work, cause you have a hope of knowing what address space their proxies are in. You can't do that generically, unless you somehow whitelist the IPs your users will be validly coming from, or figure out a way to determine what client is connecting. Cheers, -- jra -- Jay R. Ashworth Baylink jra@baylink.com Designer The Things I Think RFC 2100 Ashworth & Associates http://baylink.pitas.com 2000 Land Rover DII St Petersburg FL USA #natog +1 727 647 1274