問題，它提供了錯誤代碼SMTP：550

Question

<?php 

require_once "vendor/autoload.php"; 

$mail = new PHPMailer;  
$mail->SMTPDebug = 0;         
$mail->isSMTP();           
$mail->Host = "localhost";  
$mail->SMTPAuth = false;         
$mail->Username = "xxx@xxxx.com";      
$mail->Password = "xxxxxxx";        
$mail->SMTPSecure = "tls";        
$mail->Port = 25;          
$mail->From = "xxx@xxxxx.com"  
$mail->FromName = "xxx";  
$mail->addAddress("example@gmail.com", "example");  
$mail->isHTML(true); 
$mail->Subject = "Test"; 
$mail->Body = "<i>Helo</i>"; 
$mail->AltBody = "This is the plain text version of the email content"; 

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

?> 

梅勒錯誤：

​​

Answer 1

有一個偉大的疑難解答用於PHP郵件問題的回答一個相關的問題，PHP mail function doesn't complete sending of e-mail。

其中的細節是頭的一些細節，這可能有所幫助。這裏有幾個：

Make sure all mail headers are supplied

Some spam software will reject mail if it is missing common headers such as "From" and "Reply-to":

$headers = array("From: from@example.com", 
    "Reply-To: replyto@example.com", 
    "X-Mailer: PHP/" . PHP_VERSION 
); 
$headers = implode("\r\n", $headers); 
mail($to, $subject, $message, $headers); 

Make sure mail headers have no syntax errors

Invalid headers are just as bad as having no headers. One incorrect character could be all it takes to derail your email. Double-check to make sure your syntax is correct as PHP will not catch these errors for you.

$headers = array("From from@example.com", // missing colon 
    "Reply To: replyto@example.com",  // missing hyphen 
    "X-Mailer: "PHP"/" . PHP_VERSION  // bad quotes 
);