PHP mail（）不起作用 [英] PHP mail() doesn't work
问题描述
我想使用激活邮件等脚本编写一个简单的注册表单。但是由于某些原因mail（）不发送电子邮件，或者我的3个不同的电子邮件帐户（hotmail，gmail，yahoo）没有收到他们，因此甚至不将它们放在垃圾邮件文件夹中。
I want to script a simple registration form with activation mail and so on. But for some reason mail() doesn't send the emails, or my 3 different email accounts (hotmail,gmail,yahoo) don't receive them and therefore don't even put them in the spam folder.
代码：
<?php
$mailto = 'xxx@example.com';
$subject = 'the subject';
$message = 'the message';
$from = 'system@example.net';
$header = 'From:'.$from;
if(mail($mailto,$subject,$message,$header)) {
echo 'Email on the way';
}
?>
每当它输出电子邮件的时候，所以mail（）返回true，对吧？我真的没有得到它，我甚至试图关闭我的小骗子（虽然我没有阻止SMTP）。
Everytime it outputs 'Email on the way' so mail() returns true, right? I really don't get it, I've even tried to turn off my little snitch (although I didn't block SMTP).
推荐答案
请参阅 Jeff Atwood的这篇文章。
简而言之：只是因为你的代码将电子邮件交给邮件传输代理，意味着它会交付。是的， mail（）返回true意味着接受交付 - 这意味着看起来像一个电子邮件，我会尝试提供这个，而不是交付。即使 mail（）的说明书：
In short: Just because your code has handed the e-mail to a Mail Transfer Agent, it doesn't mean it will be delivered. Yes, mail() returning true means "accepted for delivery" - which means "Looks like an e-mail, I'll try to deliver this", not "It is delivered". Even the manual for mail() says:
重要的是要注意，只是因为邮件被接受送达，所以它不意味着邮件将实际到达目的地。
It is important to note that just because the mail was accepted for delivery, it does NOT mean the mail will actually reach the intended destination.
Soooo：检查您的MTA（是从您当地的电子邮件计算机？），尝试发送到本地地址（如果地址是本地的，是否已经交付？），尝试使用与PHP脚本相同的设置从邮件客户端发送电子邮件，尝试发送到一个较小的邮件主机，允许您关闭反垃圾邮件（是否在网络外部传送？）。另外，请阅读该文章，并检查那里提到的要点。
Soooo: check your MTA (is the e-mail sent from your local computer?), try to send to a local address (if the address is local, does it get delivered?), try to send an e-mail from your mail client, using the same settings as your PHP script, try to send to a smaller mail-hoster which allows you tu switch off antispam (is it delivered outside your network?). Also, read that article, and check the points mentioned there.
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