Shopify notifications "error delivering to mailbox"

Shopify notifications "error delivering to mailbox"

My automated notifcation from shopify work on other mail servers but when it comes to zoho it shows up in notifcations as the below. Below is a test email but my sales notifcations do the same thing?

What is the deal? Zoho is getting the email but it shows up like this?


This is the mail system at host smtp.shopify.com. 

I'm sorry to have to inform you that your message could not 
be delivered to one or more recipients. It's attached below. 

For further assistance, please send mail to postmaster. 

If you do so, please include this problem report. You can 
delete your own text from the attached returned message. 

The mail system 

< sales@x.com>: host mx.zoho.com[204.141.42.121] said: 554 5.2.3 
MailPolicy violation Error delivering to mailboxes (in reply to end of DATA 
command) 
Reporting-MTA: dns; smtp.shopify.com 
X-Postfix-Queue-ID: 58896143364 
X-Postfix-Sender: rfc822;  sales@x.com
Arrival-Date: Wed,  17 Jul 2019 12:10:07 +0000 (UTC) 

Final-Recipient: rfc822;  sales@x.com
Original-Recipient: rfc822; sales@x.com
Action: failed 
Status: 5.2.3 
Remote-MTA: dns; mx.zoho.com 
Diagnostic-Code: smtp; 554 5.2.3 MailPolicy violation Error delivering to 
mailboxes 

Return-Path: < sales@x.com
X-Path-Id: 58896143364
DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=shopify.com; s=mail; 
    t=1563365407; bh=qR2xU/WxdOoP62SHb3p0+b9RCfpftq//3opFoc3vVO0=; 
    h=Date:From:To:Message-ID:Subject; 
    b=ZnPhwjtDu45Lrk5BbEnICFqnohJd6M9tAGZ8iqOZMfoI9Jhcc2L4vzhRZKXrtXLWc 
     wmWfmddKEw53Q2yNLNxa+QD9XceNqhEYyAvjZWrIRQEdzGD09JoCu5H4TgfSceygEN 
     3jWbq7t9NqqiPP4LOsq8KemGXbuzd4II2wbTIX6g=
X-Path-Id: 4A795120004
Date: Wed, 17 Jul 2019 12:10:07 +0000
From: Venture Sunglasses < sales@x.com
To: Joseph Williams < sales@x.com
Message-ID: < 5d2f101f4590d_372ae48e8f65f4302d4@shopify.com>
Subject: [Venture Sunglasses] Order #9999 placed by John Smith
Mime-Version: 1.0
Content-Type: multipart/alternative; 
boundary="--==_mimepart_5d2f101f45356_372ae48e8f65f4301cf"; 
charset=UTF-8
Content-Transfer-Encoding: 7bit
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