"Has anyone heard anything from support on this matter?"
Yes, I have, however I don't find the responses very comforting:
"I have restarted DNS service which is usually the cause of connections
errors with email as your email server if up and running. Please try
again and let us know if you continue to have problems.
and then shortly after I recieved this:
"There are some DNS issues that are causing the email to have intermittent
problems. The admins are working on the issues today so hopefully we have
a final and long lasting resolution soon. Let me know if you have any
more questions. We're sorry for any inconviences and appreciate your
patience. Thank you for hosting with Dreamhost.