해당 오류는 fsockopen 의 $host 에 http:// 를 붙이면 나오는군요.

제로보드XE RSS 같은데 다른 곳은 되던데..
설정 문제인가..

HTTP/1.0 404 Not Found
Date: Thu, 06 Aug 2009 10:04:13 GMT
Server: Apache
X-Powered-By: PHP/5.2.4
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Pragma: no-cache
Status: 404 Not Found
Content-Length: 203
Connection: close
Content-Type: text/html; charset=iso-8859-1

Not Found
Something is wrong with your request!

<?
function SocketPost($host, $target, $posts, $port = 80) { 
    if( is_array($posts) ) { 
        foreach( $posts AS $name => $value ) 
        $postValues .= urlencode($name)."=".urlencode( $value )."&"; 
        $postValues = substr($postValues, 0, -1); 
    } 
     
    $postLength = strlen($postValues); 

    $request  = "POST $target HTTP/1.1\r\n"; 
    $request .= "Host: $host\r\n"; 
    $request .= "User-Agent: Mozilla/4.0\r\n"; 
    $request .= "Accept: text/xml,application/xml,application/xhtml+xml,"; 
    $request .= "text/html;q=0.9,text/plain;q=0.8,video/x-mng,image/png,"; 
    $request .= "image/jpeg,image/gif;q=0.2,text/css,*/*;q=0.1\r\n"; 
    $request .= "Content-Type: application/x-www-form-urlencoded\r\n"; 
    $request .= "Content-Length: ".$postLength."\r\n"; 
    $request .= "Connection: close\r\n"; 
    $request .= "\r\n"; 
    $request .= $postValues; 
    $socket  = fsockopen($host, $port, $errno, $errstr, 100); //1966라인 
    fputs($socket, $request); 

    $ret = ""; 
    while( !feof($socket) ) $ret .= fgets( $socket, 4096 ); 
    fclose( $socket ); 
    return $ret; 
}

$host = "urin79.com"; 
$target = "/rss"; 

$rss_var = SocketPost($host, $target, $_array);

echo "$rss_var";
?>