I've recently mapped my own domain to my wordpress.com blog successfully. I also added an MX record following the instructions from your help pages. Though it doen't work.
Checking my domain here http://www.dnsinspect.com/zarquon.it I've always found warnings for MX records and fatal error for MAIL.
Basically the address mail.zarquon.it cannot be resolved in reverse, and the IP currently mapped is you NS1 (or NS2).
Can you help me to take the right actions to make my mail server work? :-)
Thank you in advance for any support!
The blog I need help with is zarquon.it.