I need your help. I couldn't send and receive email.

Verification is done.  I already added MX for zoho.

I used cPanel, DKIM enabled and SPF enabled.

Honestly, some of my clients who use Google Apps have no problem. 

Can you help me to fix this problem?

Error when I sent an email from my gmail to wiwin@indo-oracle.com:

Error when to send email from wiwin@indo-oracle.com to my gmail

1. This message was created automatically by mail delivery software. 
2. A message that you sent could not be delivered to one or more of its recipients. This is a permanent error.  
3. 
   
4. wiwin.then@gmail.com Invalid Address, ERROR_CODE :550, ERROR_CODE :Please turn on SMTP Authentication in your mail client. 
5.             sender1.zohomail.com [74.201.84.156]:26824 is not permitted to relay  
6.             through this server without authentication.  
7. 
   
8. 
   
9. Received:from mail.zoho.com by mx.zohomail.com  
10.     with SMTP id 1406886607759447.9326038740179; Fri, 1 Aug 2014 02:50:07 -0700 (PDT)  
11. Message-ID:<14790f9fb5c.c6b c761516390.4353968511738255750@indo-oracle.com > 
12. Date:Fri, 01 Aug 2014 16:50:07 +0700  
13. From:webadmin < wiwin@indo-oracle.com > 
14. User-Agent:Zoho Mail  
15. To:Wiwin Then < wiwin.then@gmail.com > 
16. Subject:Re: test test  
17. Content-Type:multipart/alternative;  
18.     boundary="----=_Part_22069_1901419096.1406886607708"

I'll give any information you need for this setup.

Thanks & Regards,

Wiwin, ST, OCP.