dns @ home.com

Is anyone else having issues retrieving dns/MX from them? Sometime today,
we became unable to lookup their MX, leaving a bunch of mail destined for
them in limbo, yet, I can dig/nslookup the MX using many outside dns
servers.

Nothing has changed on our end, and I'm at a loss for an explanation, so
now I'm curious if I'm the only one?