Problem in receiving mail on my account i am getting this error.

Problem in receiving mail on my account i am getting this error.

his message was created automatically by mail delivery software. 
A message that you sent could not be delivered to one or more of its recipients. This is a permanent error. 

tarunseth@houseofzeneti.com  INVALID_ADDRESS, ERROR_CODE :550, ERROR_CODE :Please turn on SMTP Authentication in your mail client. 
            sender-of-o52.zoho.com [135.84.80.217]:21397 is not permitted to relay 
            through this server without authentication. 

Received:from mail.zoho.com by mx.zohomail.com 
    with SMTP id 1506078212307813.3755081439004; Fri, 22 Sep 2017 04:03:32 -0700 (PDT) 
Message-ID:<15ea941c06d.d12a 48be157888.7194718062006624920@houseofzeneti.com > 
Date:Fri, 22 Sep 2017 16:33:32 +0530 
From:Contact- HOUSE OF ZENETI < contact@houseofzeneti.com > 
User-Agent:Zoho Mail 
To:"modisarika" < modisarika@yahoo.co.in >, "manyarocks" < manyarocks@hotmail.com > 
Cc:"nakul" < nakul@fandf.in >, "Tarun Seth (Tarun)" < tarunseth@houseofzeneti.com >, 
    "karannseth" < karann.seth@icloud.com > 
Subject:Purchase Invoice (PI)- Art + Lamps 
Content-Type:multipart/mixed; 
    boundary="----=_Part_505160_654361315.1506078212215"