sending emails but can't receive them

sending emails but can't receive them

just made ZOHO account.
verified domain, set up mx records.
right now, emails sent by me get to to receiver but I am not able to receive any emais.
when sent from Gmail, sender gets this feedback: 

Address not found

Your message wasn't delivered to ******@nefertit.com because the address couldn't be found, or is unable to receive mail.
The response from the remote server was:

550 The mail server could not deliver mail to ******@nefertit.com. The account or domain may not exist, they may be blacklisted, or missing the proper dns entries.