Greylisting maybe?

Your MX records look to be in good shape, but it may be possible Gmail and others are sending to a cached A record? When moving domains one of the last things I do is have Google flush their cache for the domain name, any A records, MX records, etc since a LOT of people fall back to Google DNS for lookups: 

Thanks Matt - Greylisting is not on.

Thanks Kyle !  I Never knew you could do that.  I did that, but still no love.

Also, I just looked at the SMTP logs, and realized that there is no attempt from gmail to connect to .org. Not a rejection, just no traffic at all.

You're very welcome Curtis, happy to help out and share the little tidbits I've picked up over the years. Not seeing any traffic to the .org address makes me wonder if they're somehow sending it to the wrong location and it's only landing on the proper server when it does a fallback or checks DNS again. You may want to submit a ticket with details on this one so we can do some realtime testing and help get to the bottom of this for you. :-)

Actually, That may have been it.  I did the flush and walked away to run an errand.. Just got back and now I see it sent all of the emails within a few minutes. Mind you.  Each time the lower ,.com were sent out, i also sent a .org.  So it took this long and then blasted them all through at once.

Edit* In fact, now that i look at it, It looks like it sent in reverse order. The one at the top if the list @ 1:31 is the first one i sent out on the 9th,. .org "Again" is the most recent one today.