My mail got blocked because I am couldn't send out email hosted in zoho

My mail got blocked because I am couldn't send out email hosted in zoho

Hi,
 
I host my email with Zoho where my website is with wix.com. My domain name is imejjin.com and my email is shaf@imejjin.com. I have followed all the instructions however, when I tried to send out email to my own email hosted with Zoho, It failed. I tried several times and still failed until I got blocked by Zoho. 

Please solve my problem because I need to receive email from my client.

Thank you.