我收到“邮件错误：SMTP connect（）失败。”使用elasticemail主机发送电子邮件时

Question

我收到“邮件错误：SMTP connect（）失败。”同时使用elasticemail主机发送电子邮件。我尝试了所有操作，但无法从代码中纠正此错误。有人可以帮我吗？

$email = 'myemail@gmail.com';
$password = '**********';
$to_id = 'contact@myemail.com';
$message = 'hello';
$subject = 'hello@12';


$mail = new PHPMailer;
$mail->isSMTP();
$mail->Host = 'smtp25.elasticemail.com';
$mail->Port = 25;
$mail->SMTPSecure = 'tls';
$mail->SMTPAuth = true;
$mail->Username = $email;
$mail->Password = $password;

 // Email Sending Details
 $mail->addAddress($to_id);
 $mail->Subject = $subject;
 $mail->msgHTML($message);

 // Success or Failure
 if (!$mail->send()) {
 $error = "Mailer Error: " . $mail->ErrorInfo;
 echo '<p id="para">'.$error.'</p>';
 }
 else {
 echo '<p id="para">Message sent!</p>';
 }


 ?>