Mailer错误：SMTP connect（）失败？

Question

I am facing a problem regarding SMTP connection in php mailer, Here is my code

<?php
// Import PHPMailer classes into the global namespace
// These must be at the top of your script, not inside a function

//Load composer's autoloader
use PHPMailer\PHPMailer\PHPMailer;
use PHPMailer\PHPMailer\SMTP;
use PHPMailer\PHPMailer\Exception;

require 'Exception.php';
require 'PHPMailer.php';
require 'SMTP.php';
$mail = new PHPMailer(true);                              // Passing `true` enables exceptions
try {
    //Server settings

    $mail->isSMTP();                                      // Set mailer to use SMTP
    $mail->Host = 'smtp.gmail.com';  // Specify main and backup SMTP servers
    $mail->SMTPAuth = true;                               // Enable SMTP authentication
    $mail->Username = 'mine@gmail.com';                 // SMTP username
    $mail->Password = 'password';                           // SMTP password
    $mail->SMTPSecure = 'ssl';                            // Enable TLS encryption, `ssl` also accepted
    $mail->Port = 465;                                    // TCP port to connect to

    //Recipients
    $mail->setFrom('mine@gmail.com', 'mine');
    $mail->addAddress('mine@gmail.com', 'mine');     // Add a recipient
    $mail->addReplyTo('mine@gmail.com', 'mine');
    //Content
    $mail->isHTML(true);                                  // Set email format to HTML
    $mail->Subject = $_POST['name'];
    $mail->Body    = $_POST['mail']."<br>" .$_POST['phn']."<br>".$_POST['des'];
    $mail->AltBody = 'This is the body in plain text for non-HTML mail clients';

    $mail->send();
    echo 'Message has been sent';echo "<br>";`enter code here`
    echo "<a href=index.html>Go Back";
} catch (Exception $e) {
    echo 'Message could not be sent.';
    echo 'Mailer Error: ' . $mail->ErrorInfo;
}

?>

Actually this code was running perfectly and i was getting mail but now it is not working and saying Mailer Error: SMTP connect() failed this as an error. Help me !!!

Thanks...

Answer 1

Try it this way... maybe the certificate is selfsigned or something like this.

Failing that, you can allow insecure connections via the SMTPOptions property introduced in PHPMailer 5.2.10 (it's possible to do this by subclassing the SMTP class in earlier versions), though this is not recommended as it defeats much of the point of using a secure transport at all:

$mail->SMTPOptions = array(
    'ssl' => array(
        'verify_peer' => false,
        'verify_peer_name' => false,
        'allow_self_signed' => true
    )
);

https://github.com/PHPMailer/PHPMailer/wiki/Troubleshooting