在localhost上从php发送电子邮件

I am using XAMPP with Mercury and Thunderbird. When I send a message through Mercury, the message works fine and I receive the email on Thunderbird. When I try in a PHP script, it does not.

I am certain it has something to do with php but I haven't been able to find a solution as to why it is not sending.

I'm not getting any errors either and it's saying the message was sent.

mailtest.php:

$to = "patrick@localhost";
$subject = "hi";
$body="text".PHP_EOL;
$body.="this message was sent".PHP_EOL;
$headers = "From: postmaster@localhost";

if (mail($to, $subject, $body, $headers)) {
    echo "message sent!";
    } 
    else {
        echo "failed";
    }   
?>

php.ini:

[mail function]

; XAMPP: Comment out this if you want to work with an SMTP Server like Mercury
SMTP = localhost
smtp_port = 25

; I am on Windows 7 64bit
; For Win32 only.
; http://php.net/sendmail-from
; sendmail_from = localhost

sendmail.ini

smtp_server=localhost
smtp_port=25

Use this sendmail program to use with an SMTP account like a gmail account. Here is the main project site http://glob.com.au/sendmail/ and here is a quick howto from another answer on SO https://stackoverflow.com/a/11210090/209067

This is i what use for my local windows environment, i just can't find the full article tutorial where i learned about it.