The response from the remote server was: 550 Please turn on SMTP Authentication in your mail client. mail-io1-f48.google.com [209.85.166.48]:37461 is not permitted to relay through this server without

The response from the remote server was: 550 Please turn on SMTP Authentication in your mail client. mail-io1-f48.google.com [209.85.166.48]:37461 is not permitted to relay through this server without

hi i cant receive emails, it is my first time using zoho and it is embarrassing that i cant get emails from my clients.

all they see is this

The response from the remote server was:

550 Please turn on SMTP Authentication in your mail client. mail-io1-f48.google.com [209.85.166.48]:37461 is not permitted to relay through this server without authentication.