- why can't just anyone get a whitehouse.gov address?
- how can you tell when someone emails you from outside your org vs within it?
- why does spam usually come from outside your org? All of these are related to federation.
Replying to
If this is an emergency, hang up and dial 9-1-1.
@dansinker@omfg.town I worked with end users for years. I think if you ask them to explain email, sure, they're not going to come up with a completely articulated description. But if you ask email users smaller questions, they'll reveal they know more than the "slightest idea"