I can't figure out how to get e-mail from *

davidosomething.com
It's set up as an addon domain to hokuten.net, and FTP and HTTP work fine. Nameservers pointed correctly.
The MX records for the domain still point to the domain registrar (netfirms), do I have to change that or does it not matter now that the nameservers are changed?
In hokuten.net's CPanel the Default Address (catch-all) is set to forward to
awsoma
gmail.com, but I get nothing (it's not going to Spam either)
The MX records in hokuten.net's CPanel for davidosomething.com are set to hokuten.net and accept all locally
Trace Mail Route for
a
davidosomething.com shows that it's going to my e-mail address