The entered e-mail domain has no valid MX record.

[rexmundi412]

I wish you guys would quit messing about with the mail system. If it's not down for weeks, so users can't get registration emails and notices. It's something like this where when registering with valid domains like gmail, AOL, yahoo even me testing with my very own sites .x10 mail account I now get "The entered e-mail domain has no valid MX record." I could see this being a one time glitch or even occasional but this stuff has been every other week for the past year and a half. Fix it and leave well enough alone.