Dynamices 365 FO : error "the smtp server requires a secure connection or the client was not authenticated
trying to send test mail through the email parameters in dyn365FO VHD. Its give error "the smtp server requires a secure connection or the client was not authenticated. The server response was 5.7.57 SMTP; client was not authenticated to send anonymous mail during MAIL FROM" Any suggestions??? Solution : Try using same email to login to DynFO which you configured in smtp setup. If this works go to office email portal and enable 'send as' .