Email undeliverable

Email undeliverable

Hi, I have not been able to receive mails for days now, and I got a notification saying 'the MX Records of your domain(s) yourstoremail.com are not pointed to Zoho and you may not receive emails in Zoho View MX configuration details
It is saying I should go to the Domain DNS manager, and I can't remember having one. I got to zoho, registered and subscribed for my domain there, which is yearly. Please, help!!!