ResponseCode 421, Host not reachable.

ResponseCode 421, Host not reachable.

Dear Team ,

2 days back I got a message from zoho mentioning this issue resolved.

Even today its happening again .When I can expect complete solution.

error message attached.

From: mailer-daemon@mail.zoho.com

Subject: Mail Delivery Status Notification (Delay)

Date: 2 Nov 2016 11:40:54 GMT+4

To: aurelie@roomthreesixty.co

 

This message was created automatically by mail delivery system.

THIS IS A WARNING MESSAGE ONLY.

YOU DO NOT NEED TO RESEND YOUR MESSAGE.

The original message was received at Wed, 02 Nov 2016 00:40:54 -0700
from aurelie@roomthreesixty.co [aurelie@roomthreesixty.co]

   ----- The following addresses had fatal errors -----    
  [Status: Error, Address: <sachin@thekontainer.com>, ResponseCode 421, Host not reachable., Status: Error, Address: <paul@thekontainer.com>, ResponseCode 421, Host not reachable.]

Message will be retried for 4 more day(s)

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

Received:from [192.168.2.43] (86.98.11.122 [86.98.11.122]) by mx.zohomail.com
            with SMTPS id 1478069730434106.31482292048702; Tue, 1 Nov 2016 23:55:30 -0700 (PDT)
Message-ID:<19FEA605-8E1B-4CE3-BD16-A34D43B6977D@roomthreesixty.co>
Date:Wed, 2 Nov 2016 10:55:19 +0400
From:Aurelie <aurelie@roomthreesixty.co>
To:Sachin PR <sachin@thekontainer.com>
Cc:Paul Vittecoq <paul@thekontainer.com>
Subject:Aurelie signature
Content-Type:text/plain; charset=us-ascii