It fakes it, at the very least - you can do a “show original message” and see all the RFC.822 and mine headers. Microsoft Exchange used to not bother with actu

It fakes it, at the very least - you can do a “show original message” and see all the RFC.822 and mine headers. Microsoft Exchange used to not bother with actually SMTPing when talking to another exchange server (or itself), I don’t know what it does these days.