PHP Mail Script & Spam

Hi,

I use this very simple php script to send email messages from my web site.

<?php

$name = $_REQUEST['name'] ;
$phone = $_REQUEST['phone'] ;
$email = $_REQUEST['email'] ;
$message = $_REQUEST['message'] ;
$feedback = "Name: $name \nPhone: $phone \nEmail: $email \nMessage: $message";
mail( "emailaddress@gmail.com", "Message: Web Message",
$feedback, "From: $email" );
?>

Today, I got about 60 blank emails within 5 mins. Don't how it was done, but I suspect that some spammer used some script to repeatedly run the php script. How can I prevent something like this from happening again?

Thanks!

Terry

 

Use this to prevent blank mails:

<?php

$name = $_REQUEST['name'] ;
$phone = $_REQUEST['phone'] ;
$email = $_REQUEST['email'] ;
$message = $_REQUEST['message'] ;
$feedback = "Name: $name \nPhone: $phone \nEmail: $email \nMessage: $message";
if (strlen($message) > 0) {
mail( "emailaddress@gmail.com", "Message: Web Message",
$feedback, "From: $email" );
}
?>

PHP:

 

And you will also want to make sure your script is hardened against PHP Mail Injection Attacks if it is publicly available.