SMTP not work

[ms-turan]

define('MAIL_CONFIGURATION', true);
define('MAIL_FROM', '@.com');
define('MAIL_BCC', '');
define('MAIL_TRANSPORT', 'smtp');
define('MAIL_SMTP_HOSTNAME', 'smtp.g******.');
define('MAIL_SMTP_PORT', 578);
define('MAIL_SMTP_USERNAME', '@.com');
define('MAIL_SMTP_PASSWORD', '**********');
define('MAIL_SMTP_HELO_NAME', null);
define('MAIL_SMTP_ENCRYPTION', 'tls');

The e-mail is not sent in the codes I have edited above, where am I making a mistake? There is no problem with online testing tools.