如何設置發件人的電子郵件僅從特定域發送？

Question

例如，我只希望發件人的電子郵件來自“ anything@abc.com”，如果不允許其他電子郵件（如“ anything@cde.com”），則僅允許@ abc.com。 我該怎么辦？

假設$ _POST ['Sender'] =“ anything@abc.com”;

 $to = "someone@example.com"; $subject = "Test mail"; $message = "Hello! This is a simple email message."; $from = $_POST['Sender']; $headers = "From:" . $from; mail($to,$subject,$message,$headers); echo "Mail Sent."; 

Answer 1

您應該可以將其包裝在if語句中：

$to = "someone@example.com";
$subject = "Test mail";
$message = "Hello! This is a simple email message.";
$from = $_POST['Sender'];
$headers = "From:" . $from;

if ($from === "anything@abc.com") {
    mail($to,$subject,$message,$headers);
    echo "Mail Sent.";
}

Answer 2

您可以使用PHP的strstr函數剝離電子郵件的第一部分（@之前的所有內容），如下所示：

$from = strstr($_POST["Sender"], "@");

if($from == "@abc.com") {
    // send mail
    mail($to,$subject,$message,$headers);
    echo "Mail Sent.";
}

有關strstr函數的更多信息，請參見http://php.net/manual/en/function.strstr.php 。