I just noticed this default "User" rule, which I've never seen before (Maybe it's new to v 2.3.6?), in my Little Snitch pane: Allow TCP connections to port 465 (urd).

I've never even heard of "urd," so why do I need a rule allowing connections?

Thanks.

URD is Cisco's URL Rendezvous Directory. It's part of a system that allows streaming multicast video. I have no idea what kind of systems or servers serve up streaming content this way, but that's what it's for.

Thanks, tacit.

Streaming multicast video via e-mail?

And if it's that obscure, I wonder why Little Snitch has made it a default rule?