您的配置可能有误.我相信，如果将主机更改为smtp.gmail.com，可能会解决您的问题.

Your configuration might be wrong. I believe that if you change your host into smtp.gmail.com it might solve your problem.

我注意到您设置了安全性tls，但是您也想与ssl连接.

I noticed that you set security tls but you want to connect with ssl as well.

将$mail->Host = "ssl://smtp.gmail.com";更改为$mail->Host = "smtp.gmail.com";，并将安全性更改为ssl.

Change $mail->Host = "ssl://smtp.gmail.com"; into $mail->Host = "smtp.gmail.com"; and security to ssl.

来自此答案:

$mail = new PHPMailer(); // create a new object
$mail->IsSMTP(); // enable SMTP
$mail->SMTPDebug = 1; // debugging: 1 = errors and messages, 2 = messages only
$mail->SMTPAuth = true; // authentication enabled
$mail->SMTPSecure = 'ssl'; // secure transfer enabled REQUIRED for Gmail
$mail->Host = "smtp.gmail.com";
$mail->Port = 465; // or 587
$mail->IsHTML(true);
$mail->Username = "email@gmail.com";
$mail->Password = "password";
$mail->SetFrom("example@gmail.com");
$mail->Subject = "Test";
$mail->Body = "hello";
$mail->AddAddress("email@gmail.com");

 if(!$mail->Send()) {
    echo "Mailer Error: " . $mail->ErrorInfo;
 } else {
    echo "Message has been sent";
 }