A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond 202.*.*.36:80

我在公司的测试服务器（有独立IP）上是可以成功抓取网页数据的  但是发布之后 报上面错误

哪位高手知道为何么？

HttpWebRequest request = (HttpWebRequest)WebRequest.Create(adminUrl);
            request.Method = "GET";
            
            HttpWebResponse response = (HttpWebResponse)request.GetResponse();
            Stream streamReceive = response.GetResponseStream();

            StreamReader streamReader = new StreamReader(streamReceive, System.Text.Encoding.Default);
            string strResult = streamReader.ReadToEnd();