Getting Uknown Sender when trying to send Email with PHP

[Pistallion]

Here's my code:

<?php
include('common.php');
	$link=dbConnect();

$name = safe($_POST['name']);
$password = safe($_POST['password']);
$email = $_POST['email'];
$activationCode = safe($_POST['activationCode']);
$activationURL = safe($_POST['activationURL']);
$deleteCode = safe($_POST['deleteCode']);
$deleteAccountURL = safe($_POST['deleteAccountURL']);
$gameName = safe($_POST['gameName']);
$hash = safe($_POST['hash']);

$real_hash = md5($name . $secretKey); 

if($real_hash == $hash)
{ 
	$query = "INSERT INTO $dbName .`UserData` (`id`, `name`, `password`, `email`, `activate`, `activationCode`, `deleteCode`) VALUES (NULL, '$name', '$password', '$email', 'No', '$activationCode', '$deleteCode');"; 
	$result = mysql_query($query) or die('Query failed: ' . mysql_error());

	$to = $email;
	$subject = "Activate Account";
            $headers = "From:[e-mail]";

	$body = "Good day \n" . 
			"Someone claiming to be " . $name . " has used this email to create an account for " . $gameName . "\n" . 
			"If it was not you who created this account, no further action is required on you behalf but, if you want, simply click the relevant link below to cancel this account immediately." . "\n" .
			"If you did create the account, please click the relevant link, below, to activate your account for " . $gameName .". \n \n" .
			"Activate your account - " . $activationURL . "?activationCode=" . $activationCode ."\n" .
			"Cancel this account immediately - " . $deleteAccountURL . "?deleteCode=" . $deleteCode ."\n \n" .				
			"Thank you for registerring for " . $gameName;


	if (mail($to, $subject, $body, $headers )) 
	{
		echo("true");
	} 
	else 
	{
		echo("emailFalse");
	}
}
else
{
	echo 'secretKeyFalse';
}
?>	

when i send the email, it comes from a unknown user

[sfullman]

put a space after From:
if still no result, add a "\r\n" after the email from, but I don't think that's necessary on the last line.
also, you need to look at the 5th parameter from php.net/mail - the -f switch, and ideally add it to your coding. Otherwise bounces will not go where you want them to I believe
Sam

[Bonesnap]

sfullman;11023643 wrote:

if still no result, add a "\r\n" after the email from, but I don't think that's necessary on the last line.

I have always added the "\r\n" on the last headers line. No problems so far. They're also in the examples on php.net.

[sneakyimp]

I'm not at all sure, but it sounds like your mail transfer agent doesn't like the From header that you are supplying. Try leaving out the headers and see if that helps. You might want to look into specifying not just From but also sender and/or reply-to headers.

[Bonesnap]

sneakyimp;11023723 wrote:

I'm not at all sure, but it sounds like your mail transfer agent doesn't like the From header that you are supplying. Try leaving out the headers and see if that helps. You might want to look into specifying not just From but also sender and/or reply-to headers.

My understanding of the [man]mail/man function is that the headers are required. Or more specifically, the "from" header. I always include the "Reply-To" header as well.