SMTP邮件未在Codeigniter中发送

Question

在Config.php文件中，我有更改

$config['protocol']='smtp';

$config['smtp_hostname'] = "ssl://smtp.zoho.com";

$config['smtp_crypto'] = 'tls';

$config['smtp_username'] = "aaaa";

$config['smtp_password'] = "xxx";

$config['smtp_port'] = '465';

$config['smtp_timeout'] = '7';

$config['newline'] = "\r\n";

但无法发送。 enter image description here