I own the domain:  positivechg.com
I'm trying setup a custom mail domain.  Register.com is the company I used to setup my domain.  I change the IP (A-record) to reslove to 69.220.9.56 but the drivehq email is not letting me set up custom email domain.  I ping the domain. See below.  What I'm doing wrong?
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C:\Users\Todd>ping mail.positivechg.com
Pinging mail.positivechg.com [69.220.9.56] with 32 bytes of data:
Reply from 12.83.77.141: Destination net unreachable.
Reply from 12.83.77.141: Destination net unreachable.
Reply from 12.83.77.141: Destination net unreachable.
Reply from 12.83.77.141: Destination net unreachable.
Ping statistics for 69.220.9.56:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),