553 relaying disallowed - Please help!

553 relaying disallowed - Please help!

Hi there,

I recently transferred my email system from Zoho to another supplier. I have set up all the new configuation data.
But my new email can't received email from gmail, it works fine from hotmail, yahoo mail and other company emails.

Please help me to sort this out.

Many thanks 
Abby

Error Icon

Message not delivered

There was a problem delivering your message to abbychien@bloomyield.org. See the technical details below.
The response was:

553 Relaying disallowed


Final-Recipient: rfc822; abbychien@bloomyield.org
Action: failed
Status: 5.0.0
Remote-MTA: dns; mx.zoho.com. (204.141.42.121, the server for the domain bloomyield.org.)
Diagnostic-Code: smtp; 553 Relaying disallowed
Last-Attempt-Date: Thu, 31 Aug 2017 05:46:13 -0700 (PDT)