//打开smtp服务器端口
        $fp = @fsockopen($smtp_host, 25);
        if (!$fp) echo "<b>Error:</b> Cannot conect to ".$smtp_host."<br>";
        while($result = @fgets($fp, 1024)){if(substr($result,3,1) == " ") { break; }}
       
        $result_str="";
        //发送smtp数组中的命令/数据
        foreach($smtp as $req){
                //发送信

(编辑:aniston)