amychow

I solved it. I just made a careless mistake that forgot to create a App_WebReference asp.net folder.

I have tried the sample code provided by the SMS service provider and it works. However, I don't know how to implement it to my application. The sample code includes: There are 3 files in App_WebReference\com\upsidewireless\api\sms which are SMS.disco, SMS.WSDL and SMS.discomap. There are Default.aspx and Default.aspx.cs in SMS directory. When I browse to the Default.aspx, it will provide me an interface which can send sms message. P.S App_WebReference and SMS directories are in the same level. Here are the setting of my application: I created a testSMS ASP.NET Web Application. When I added the "using com.upsidewireless.api.sms;" to the Default.aspx.cs, it gave an error "The type or namespace name 'com' could not be found (are you missing a using directive or an assembly reference?)", I know that I should add the reference. Therefore, I created folders com\upsidewireless\api\sms for the testSMS project, and add the SMS.disco, SMS.WSDL and SMS.discomap files to it. Unluckily, the same error still exist. I am wondering is it the reference should not be added like this way and how should it be added correctly. Steps of steps of how to add the reference will be appreciated.

I have also contacted the SMS service provider for the problem I encountered, he/she said "YOU ARE USING A NON EXISTING/DEPRECATED METHOD." and suggested to use SOAP method instead. I am trying the SOAP method and it seems work.

Thanks very much! I have contacted the administrator of school. He suggested me to use another email server which he provided for me. And now, I can send email out.

I have contacted the administrator of school and he provided me another email server which can send email out.

I still cannot fix the problem. I have tried to use another email server instead.

Thanks everyone who gave comment here. I may try to use another email server.

No, this is at school. I have contacted the SMS service provider and waiting for response. For my SMTP virtual server, when I first configured the SMTP server, I can send email to outside. But I don't know why after a period, I cannot send email to outside. Maybe I made some modification after that.

I have turn off the windows firewall and still not work.

How can I configure the firewall that it can access a remote TCP 25? Thanks!

Hi, I am trying to use the SMS service provided by a SMS provider to send SMS from my application to mobile phone. However, the error existed "A socket operation was attempted to an unreachable network 69.28.206.212:25". The code used is as follow: protected void Submit_Click(object sender, EventArgs e) { SmtpClient client = new SmtpClient("smtp.ipipi.com"); client.Credentials = new NetworkCredential("useraccount", "password"); client.Send("[email protected]", "[email protected]", "", "Your Message"); } Could anyone give me any advice? Thanks a lot!

There do not have any errors in the event log about replication or dns.

The mail server is configured to deliver directly.

Can you recieve internal to internal? Yes.

Can you telnet out and in on port 25? Both cannot. Have you an external DNS forwarder? i.e. can you nslookup gmail.com and get a response? No, I do not have an external DNS. What does the queue say in exchange manager about the undeliverable messages? I am using windows server 2003. When I tried to send an email to outside with outlook express, an error "This is an automatically generated Delivery Status Notification. Delivery to the following recipients failed." is occured.