I can send, but I Can´t Recieve Mails!!!!

I can send, but I Can´t Recieve Mails!!!!

Dear all

I can sent email to google email but I can not receive email.
After sending, the bellow message is sent to google email

I have checked, and confirmed that my domain was pointed to zola.

Please help me, Thank you very much

Delivery to the following recipient failed permanently:

    thang@watermelon.vn

Technical details of permanent failure: 

Google tried to deliver your message, but it was rejected by the server for the recipient domain watermelon.vn by mx2.zoho.com. [165.254.168.50].