Sending Email Problem

[Kaizard]

Hi, I'm trying to create a simple email script..but I'm getting this error..

 

Warning: mail() [function.mail]: SMTP server response: 550 5.7.1 Unable to relay for testmail@yahoo.com in D:\Xampp\htdocs\CMEPortal\Test.php on line 83

 

Message delivery failed...

 

Here's my code:

 

$to = "testmail@yahoo.com";
$subject = "Hi!";
$body = "Hi,\n\nGenki desu ka?";
$headers = "From: sender@example.com\r\nX-Mailer: php";

if (mail($to, $subject, $body, $headers)) {
   echo("<p>Message sent!</p>");
} else {
   echo("<p>Message delivery failed...</p>");
}

 

What should I do? Thanks in advance!

 

[Daniel0]

You should fix your SMTP server.

[Kaizard]

You should fix your SMTP server.

 

Any tips?

[PFMaBiSmAd]

Your sending mail server has relaying restricting in effect (which it should) and thinks that you are relaying an email through it. This would occur if neither of the To: or From: address is hosted at the sending mail server. Is the From: address hosted at the sending mail server? You can also get a "Unable to relay" error if your mail server unconditionally requires SMTP authentication in order to send any email, relayed or not.