smtp; 553 Relaying disallowed

smtp; 553 Relaying disallowed

I'm facing email receiving problems after changing the server. I'm able to send emails but receiving is problem. Here is the log:

Final-Recipient: rfc822; ***@agorametal.com
Action: failed
Status: 5.0.0
Remote-MTA: dns; mx.zoho.eu. (185.20.209.166, the server for the domain agorametal.com.)
Diagnostic-Code: smtp; 553 Relaying disallowed