如何设置发件人的电子邮件仅从特定域发送？

Question

例如，我只希望发件人的电子邮件来自“ anything@abc.com”，如果不允许其他电子邮件（如“ anything@cde.com”），则仅允许@ abc.com。 我该怎么办？

假设$ _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

您应该可以将其包装在if语句中：

$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函数剥离电子邮件的第一部分（@之前的所有内容），如下所示：

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

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

有关strstr函数的更多信息，请参见http://php.net/manual/en/function.strstr.php 。