Can receive emails from server in gmail but cannot send from Gmail

I am able to send emails from my Cpanel email client to my gmail account but cannot send email from gmail to the cpanel account and get this error: The response from the remote server was: 550 5.4.1 [name[EMAIL='admin@coldturkeyonline.com">@domain.com[/EMAIL]]: Recipient address rejected: Access denied [HK2APC01FT015.eop-APC01.prod.protection.outlook.com] Final-Recipient: rfc822; [EMAIL='admin@coldturkeyonline.com">name@domain.com[/EMAIL] Action: failed Status: 5.4.1 Remote-MTA: dns; domain-com.mail.protection.outlook.com. (65.55.88.202, the server for the domain domain.com.) Diagnostic-Code: smtp; 550 5.4.1 [[EMAIL='admin@coldturkeyonline.com">name@domain.com[/EMAIL]]: Recipient address rejected: Access denied [HK2APC01FT015.eop-APC01.prod.protection.outlook.com] Last-Attempt-Date: Tue, 10 Oct 2017 22:25:01 -0700 (PDT) How do I fix this? I have tried pointing MX to google in cpanel, no result I change SSL certificate to authenticated certificate, no result I tried adding google to the CNAME list in cpanel, didn't work I'm trying configure my gmail so I can read and reply from gmail not from webmail. Please help me, thank you