i am trying to make code for send sms in asp.net but i got one error please if any one know about this error. pls help

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UriBuilder urlBuilder = new UriBuilder();
        urlBuilder.Host = "127.0.0.1";
        urlBuilder.Port = 8800;

        //string PhoneNumber = "60123456789"; 
        string PhoneNumber = "09638136263";
        string message = "Just a simple text";

        urlBuilder.Query = string.Format("PhoneNumber=%2B" + PhoneNumber + "&Text=" + message);

        HttpWebRequest httpReq = (HttpWebRequest)WebRequest.Create(new Uri(urlBuilder.ToString(), true));
        HttpWebResponse httpResponse = (HttpWebResponse)(httpReq.GetResponse());
       Response.Write(httpResponse.StatusCode.ToString());
        Response.Write("sms send successfully");

Error is : Unable to connect to the remote Server in above bold line.

Posted 2-Jul-12 0:21am

Akash Rangani

Updated 2-Jul-12 0:44am

Manas Bhardwaj

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Ganesan Senthilvel · Answer 1 · 2012-07-02T00:34:00

Usually means that the tcp port you are trying to connect to does not have any service listening on it, i.e. it is closed and a tcp connection could not be made, let alone a SMTP connection. Nothing will show in your exchange logs as it is failing at a lower level in the network stack and your mail server will not even see the connection attempt.

f you are using any antivirus software check it's log to see whether it is because of the antivirus. I faced same problem when McAffee was blocking my mails (there is a security policy - Prevent mass mailing worms from sending mails). Edit this policy and add your application to the exception list. In my case this sorted the problem. Please check if it works for you.

Sandeep Mewara · Answer 2 · 2012-07-02T00:44:00

It can be because of various reasons. You need to look at them one by one.
Is the port open? Firewall permissions in place?

Further make sure you have configured SMTP configuration in Web.Config:

<system.net>
   <mailSettings>
     <smtp from="abc@somedomain.com">
       <network host="somesmtpserver" port="25" userName="name" password="pass" defaultCredentials="true" />
     </smtp>
   </mailSettings>
</system.net>

If needed, have a look at this Microsoft Video tutorial:
Video: Use ASP.NET to send Email from Website[^]

i am trying to make code for send sms in asp.net but i got one error please if any one know about this error. pls help

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