问在Codeigniter 3中通过Office365帐户发送电子邮件-连接超时

EN

<?php 
$config['smtp_crypto'] = 'tls'; 
$config['protocol'] = 'smtp'; 
$config['smtp_host'] = 'smtp.office365.com';
$config['smtp_user'] = 'USER@EMAIL.COM'; 
$config['smtp_pass'] = 'password'; 
$config['smtp_port'] = '587'; 
$config['charset']='utf-8'; // Default should be utf-8 (this should be a text field) 
$config['newline']="\r\n"; //"\r\n" or "\n" or "\r". DEFAULT should be "\r\n" 
$config['crlf'] = "\r\n"; //"\r\n" or "\n" or "\r" DEFAULT should be "\r\n" 
?>

continue with this tested code

  <?php
     $mail= new phpmailer();  
     $mail->isSMTP();
     $mail->Host = 'smtp.office365.com'; 
     $mail->Port       = 587;
     $mail->SMTPSecure = 'tls';
     $mail->SMTPAuth   = true;
     $mail->Username = 'alertas@xxx.com';
     $mail->Password = 'Password';
     $mail->SetFrom('alertas@xxx.com', 'FromEmail'`enter code here`);
     $mail->addAddress('x@xxx.com', 'ToEmail');
     $mail->IsHTML(true);
$mail->Subject = 'Correo desde PHP';
$mail->Body    = 'Prueba de correo desde php</b>';       

if(!$mail->send()) { 
  echo "Ok"; 
} else { 
   echo "Error";
}
?>

/**
* STREAM_CRYPTO_METHOD_TLS_CLIENT is quite the mess ...
*
* - On PHP <5.6 it doesn't even mean TLS, but SSL 2.0, and there's no option to use actual TLS
* - On PHP 5.6.0-5.6.6, >=7.2 it means negotiation with any of TLS 1.0, 1.1, 1.2
* - On PHP 5.6.7-7.1.* it means only TLS 1.0
*
* We want the negotiation, so we'll force it below ...
*/

MY_phpmailer.php

<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');

class MY_PHPMailer {
        public function My_PHPMailer() {
        require_once('Phpmailer/class.phpmailer.php');
    }
}
?>

public  function sendmail2($to,$subject,$message,$reply=null,$nameReply=null){

    $this->CI->load->library('MY_phpmailer');

    //$this->load->library('MY_phpmailer'); (If you use this function inside CI, use this instead above) I use CI->load above because my function is in a function_helper, not on controller

    $mail = new PHPMailer();
    $mail->IsSMTP(); //Definimos que usaremos o protocolo SMTP para envio.
    $mail->SMTPDebug = 0;
    $mail->CharSet = 'UTF-8';
    $mail->SMTPAuth = true; //Habilitamos a autenticaçăo do SMTP. (true ou false)
    $mail->SMTPSecure = "tls"; //Estabelecemos qual protocolo de segurança será usado.
    $mail->Host = "smtp.office365.com"; //Podemos usar o servidor do gMail para enviar.
    $mail->Port = 587; //Estabelecemos a porta utilizada pelo servidor do gMail.
    $mail->Username = "your_email@yourdomain.com.br"; //Usuário do gMail
    $mail->Password = "Strong_Password"; //Senha do gMail

    if($reply != null and $nameReply != null){
        //add replyto if you send those values, so you can set other reply address than senders address
        $mail->AddReplyTo($reply, $nameReply);
    }

    $mail->SetFrom('your_email@yourdomain.com.br', 'Senders Name'); //Quem está enviando o e-mail.
    $mail->Subject =  $subject;
    $mail->IsHTML(true); 
    $mail->Body = $message;
    //$mail->AltBody = "Plain text.";
    $mail->AddAddress($to);

    /*If you want to put attachments that comes from a input FILE type name='file'.*/
    if (isset($_FILES['file']) &&
        $_FILES['file']['error'] == UPLOAD_ERR_OK) {
        $mail->AddAttachment($_FILES['file']['tmp_name'],
                             $_FILES['file']['name']);
    }

    if(!$mail->Send()) {
        // error occur - user your show method to show error
        set_msg('msgerro', $mail->ErrorInfo, 'erro');
    } else {
        // success occur - user your show method to show success
        set_msg('msgok', 'E-mail enviado.', 'sucesso');
    }

}

$this->load->library("MY_phpmailer");

$this->system->sendmail2($to, $subject, $message); //$to, $subject and $message are vars you sent from your backend - prefer HTML to $message