I'm setting up email for my wordpress.com website. I previously bought web domain mapping, and now I'm adding custom DNS records as explained here: http://en.support.wordpress.com/domains/add-email/add-other-email/
However, my email provider asks to specify subdomain for MX, and I don't know how to do that. (I've already created an A record with the relevant subdomain pointing to the correct IP, no problem. ) These are the instructions they provided:
How do I specify the subdomain? Thanks
The blog I need help with is therestartproject.org.