Error : 554 5.2.3 MailPolicy violation Error delivering to mailboxes

Error : 554 5.2.3 MailPolicy violation Error delivering to mailboxes

I have no idea how to solve the forwarding issue as below.


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The following message could not be forwarded to allmail@dbp-solutions.com for support@dbp-solutions.com

Technical details of the failure:
dsn=5.0.0, stat=failure, 5.0.0 MailPolicy violation Error delivering to mailboxes

----- Transcript of session follows -----

 Received:from e------v.---.local (mail.d----------.com.hk [118.xxx.xxx.198]) by mx.zohomail.com
        with SMTPS id 1484015365095661.9408823836369; Mon, 9 Jan 2017 18:29:25 -0800 (PST)
 Date:Tue, 10 Jan 2017 02:12:14 +0000
 From: ------------ < s------n.k--n@d---------.com.hk>
 To:DBP Solutions Limited < support@dbp-solutions.com>
 Subject:------------------------------------------------------
 Content-Type:multipart/mixed;
        boundary="_007_1490e8d5d23d4899b056752964186971e---------------local_"

P.S: Please note that your email forwarding will be disabled if there are too many failures.

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