Message Not Delivered - "550 Please turn on SMTP Authentication in your mail client"

Message Not Delivered - "550 Please turn on SMTP Authentication in your mail client"

Hi, I configured my DNS MX Records, SPF, DKIM and got them all verified in my Zoho Mail Control Panel. I'm unable receive mails from gmail. I tried sending test mail from my gmail to my zoho email, here is the error I got back:


Error Icon

Message not delivered
Your message couldn't be delivered to remy@rfsdesign.inbecause the remote server is misconfigured. See technical details below for more information.
The response was:

550 Please turn on SMTP Authentication in your mail client. mail-qt0-f172.google.com [209.85.216.172]:38340 is not permitted to relay through this server without authentication.

Final-Recipient: rfc822;  remy@rfsdesign.in
Action: failed
Status: 5.0.0
Remote-MTA: dns;  rfsdesign.in . (184.164.144.133, the server for the domain  rfsdesign.in .)
Diagnostic-Code: smtp; 550-Please turn on SMTP Authentication in your mail client.
  550-mail-qt0-f172.google.com  [209.85.216.172]:38340 is not permitted to relay
 550 through this server without authentication.
Last-Attempt-Date: Sun, 14 Jan 2018 22:06:33 -0800 (PST)