553 Relaying disallowed

Hello

My domain has been verified by still not able to receive or send mails with my account.

Could you please check.

mail back

伺服器的回應如下：

553 Relaying disallowed

Final-Recipient: rfc822; ricky@kb-ent.com.tw
Action: failed
Status: 5.0.0
Remote-MTA: dns; mx.zoho.com. (8.40.222.121, the server for the domain kb-ent.com.tw.)
Diagnostic-Code: smtp; 553 Relaying disallowed
Last-Attempt-Date: Sat, 16 Sep 2017 19:32:12 -0700 (PDT)

Thank you in advance,

Regards,