阿里云ECS发送企业邮件

<?php
use PHPMailer\PHPMailer\PHPMailer;
require \'../vendor/autoload.php\';

$mail = new PHPMailer(true);

try {
    //Server settings
    $mail->CharSet = \'utf-8\';
    $mail->SMTPDebug = 2;
    $mail->isSMTP();
    $mail->Host = \'ssl://smtp.mxhichina.com\';   //使用阿里云注意使用ssl协议
    $mail->SMTPAuth = true;
    $mail->Username = \'xxx\';
    $mail->Password = \'xxx\';
    $mail->SMTPSecure = \'tls\';
    $mail->Port = 465;  //阿里云开启端口

    //Recipients
    $mail->setFrom(\'xxx\', \'xxxxxx\');
    $mail->addAddress(\'xxx\', \'Joe User\');
    $mail->addAddress(\'xxx\', \'Joe User\');
    $mail->addReplyTo(\'xxx\', \'Information\');

    $mail->isHTML(true);
    $mail->Subject = \'阿里企业邮箱发送自动发送邮件\';
    $mail->Body    = \'<b>报警了....</b>\';
    $mail->AltBody = \'报警邮件\';

    $mail->send();
    echo \'Message has been sent\';
} catch (Exception $e) {
    echo \'Message could not be sent. Mailer Error: \', $mail->ErrorInfo;
}