553 Relaying disallowed

553 Relaying disallowed

Hi there,

I have a domain @demos-ti.org and i used ZOHO MAIL.

I have done all necessary things (MX,DKIM,SPF) to set up. And i am able to send e-mails but i am not able to receive e-mails from other accounts to my account at zoho.

I am receiving this error: 553 Relaying disallowed

Is any chance you can help me out ? My domain is demos-ti.org 

Thank you!
Best,
Granit.