mail hosting problem

Hi zoho friends,

I signed up for free mail hosting for my domain that I bought from godaddy. Initially I had problem with validating my domain but thanks to zoho support and help content, I could able to validate my domain and make MX changes as well.

However, I am neither able to send to, and receive mails from myname@mydomain.com. When I send a mail to myname@mydomain.com, from gmail, I am still (after more than 24 hrs of creating account and validating domain) getting Mailer Demon. When I login using myname@mydomain.com or a specific user name at zoho gateway and compose mail, the To-field default shows some other myname@zoho.com - and not myname@mydomain.com.

Appreciate, if you guys help me understand the issue here.

Regards
Sankar