Wasn't it called Draenor back in Warcraft III, before the WoW-Draenei-Retcon was even conceived? The initial Draenei, aka lost ones, were presented as mere inhabitants of Draenor that just fought with the fel-orcs. No further explanation was given, back then. So the Name Draenor was just kept for consistency reasons. Consistency... olol ^^.Of course, the biggest idiocy in the Dreanei's so called 'eternal journey' was the naming of their newest home in the tongue that was easily understood by their pursuers, and if that wasn't enough, explicitly naming said refuge after themselves. Which, as the 'novel' (though calling it such is a disgrace to literature) RoH(?), points out, is what initially attracted said pursuers to track them down to this new area. Ergo, everything is, in fact, their fault.
I always wondered why we never got a name from the Orcs, or why the Draenei even gave the planet this name. If inhabitants are already there, why wouldn't you just well... call the planet by the name it's already been given?
BTW: How is it that the Legion learned the Name of the planet, before even landing there? That would imply that the Orcs or some other indigenous race would:
a) Communicate directly with the legion
b) possess space travel of some kind and run into a legion agent, telling him "Dude, there's place called Draenor".
No they can't. They can sense it ONCE THEY ARE ON THE PLANET. But not from a distance and know "They are on planet X".The Legion can sense Draenei magic and it brought them to the Orc planet.
The legion can only sense MASSIVE arcane energies, like the kind which the Highborne used or like we used on Argus.