Our company had two domain names:
formerly redirected web traffic to domainTwo.com and had an MX record to redirect mail to a non-dreamhost mail server's IP.
We decided we were going to set up a website on domainone.com, so I switched it from "Redirect to" to "Fully hosted". When I did that, I believe the MX record went 'poof'.
I contacted Dreamhost about it promptly but so far no response. I am in a bit of a panic as I worry this is going to kill our ability to send/receive email. I do not know what the MX records were set to before.
Anyone have any words of wisdom, other than, "don't do that"?