无法通过 PHPMailer 使用 Gmail SMTP 服务器发送电子邮件，出现错误：在端口 587 上提交邮件需要 SMTP AUTH。如何修复？

我想使用发送电子邮件邮箱 SMTP服务器通过PHP 邮件程序.

这是我的代码

<?php
require_once('class.phpmailer.php');

$mail = new PHPMailer();
$mail->IsSMTP();
$mail->CharSet="UTF-8";
$mail->SMTPSecure = 'tls';
$mail->Host = 'smtp.gmail.com';
$mail->Port = 587;
$mail->Username = '[email protected]';
$mail->Password = 'valid password';
$mail->SMTPAuth = true;

$mail->From = '[email protected]';
$mail->FromName = 'Mohammad Masoudian';
$mail->AddAddress('[email protected]');
$mail->AddReplyTo('[email protected]', 'Information');

$mail->IsHTML(true);
$mail->Subject    = "PHPMailer Test Subject via Sendmail, basic";
$mail->AltBody    = "To view the message, please use an HTML compatible email viewer!";
$mail->Body    = "Hello";

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

但我收到以下错误

Mailer Error: SMTP Error: The following recipients failed: [email protected]

SMTP server error: SMTP AUTH is required for message submission on port 587

我的域名是vatandesign.ir

$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 protected]";
$mail->Password = "password";
$mail->SetFrom("[email protected]");
$mail->Subject = "Test";
$mail->Body = "hello";
$mail->AddAddress("[email protected]");

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

上面的代码已经过测试并且对我有用。

这可能是你需要的$mail->SMTPSecure = 'ssl';

另请确保您没有为该帐户打开两步验证，因为这也可能会导致问题。

UPDATED

您可以尝试将 $mail->SMTP 更改为：

$mail->SMTPSecure = 'tls';

值得注意的是，某些 SMTP 服务器会阻止连接。 某些 SMTP 服务器不支持SSL (or TLS）连接。