Other Asian, Australian and South Pacific Frequent Flyer Programs - Determining MH fare class?

I recently flew on a super-cheap "MHlow" fare from KUL to SIN. The website and the e-ticket do not indicate the fare class, but my boarding card stub says "Class: X". Is this the actual fare class?

If yes, it's apparently eligible for Delta SkyMiles (http://skymilesoffers.delta.com/airline_partners.php), since they award min. 500 miles for "all Malaysia Airlines-operated flights with the exception of all domestic Malaysia flights and flights booked in G, L, V or W class" -- no mention of X! :eek:

if this was one of those standby KUL-SIN fares, then I'm guessing no.

if this was one of those standby KUL-SIN fares, then I'm guessing no.
No, not standby, but the very cheapest class of advance booking fare (under RM150 all in).

And I agree that obviously this fare does not earn any MH miles, it even says "Enrich Miles: Nil" in small print on e-ticket. My questions are, is the fare class really is "X", and if yes, will Delta follow the letter of their own rules and grant the miles? :confused:

...And I agree that obviously this fare does not earn any MH miles, it even says "Enrich Miles: Nil" in small print on e-ticket. My questions are, is the fare class really is "X", and if yes, will Delta follow the letter of their own rules and grant the miles? :confused:
Did you get the DL miles?
It would be unusual to get miles in a partner's FFP when miles are not available in the carrier's FFP.