Question

No connection could be made because the target machine actively refused it 127.0.0.1:25
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details:
System.Net.Sockets.SocketException: No
connection could be made because the
target machine actively refused it
127.0.0.1:25

Source Error:

An unhandled exception was
generated during the execution of the
current web request. Information
regarding the origin and location of
the exception can be identified using
the exception stack trace below.

Stack Trace:

[SocketException (0x274d): No
connection could be made because the
target machine actively refused it
127.0.0.1:25] System.Net.Sockets.Socket.DoConnect(EndPoint
endPointSnapshot, SocketAddress
socketAddress) +239
System.Net.Sockets.Socket.InternalConnect(EndPoint
remoteEP) +35
System.Net.ServicePoint.ConnectSocketInternal(Boolean
connectFailure, Socket s4, Socket s6,
Socket& socket, IPAddress& address,
ConnectSocketState state, IAsyncResult
asyncResult, Int32 timeout, Exception&
exception) +224

[WebException: Unable to connect to
the remote server]
System.Net.ServicePoint.GetConnection(PooledStream
PooledStream, Object owner, Boolean
async, IPAddress& address, Socket&
abortSocket, Socket& abortSocket6,
Int32 timeout) +5483819
System.Net.PooledStream.Activate(Object
owningObject, Boolean async, Int32
timeout, GeneralAsyncDelegate
asyncCallback) +202
System.Net.PooledStream.Activate(Object
owningObject, GeneralAsyncDelegate
asyncCallback) +21
System.Net.ConnectionPool.GetConnection(Object
owningObject, GeneralAsyncDelegate
asyncCallback, Int32 creationTimeout)
+332 System.Net.Mail.SmtpConnection.GetConnection(String
host, Int32 port) +160
System.Net.Mail.SmtpTransport.GetConnection(String
host, Int32 port) +159
System.Net.Mail.SmtpClient.GetConnection()
+35 System.Net.Mail.SmtpClient.Send(MailMessage
message) +1213

[SmtpException: Failure sending mail.]
System.Net.Mail.SmtpClient.Send(MailMessage
message) +1531
Checkout.btnSend_Click(Object sender,
EventArgs e) +2675
System.Web.UI.WebControls.Button.OnClick(EventArgs
e) +111
System.Web.UI.WebControls.Button.RaisePostBackEvent(String
eventArgument) +110
I can’t send email in live connection but in my local its working.

please help me guys.

System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String
eventArgument) +10
System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler
sourceControl, String eventArgument)
+13 System.Web.UI.Page.RaisePostBackEvent(NameValueCollection
postData) +36
System.Web.UI.Page.ProcessRequestMain(Boolean
includeStagesBeforeAsyncPoint, Boolean
includeStagesAfterAsyncPoint) +1565

Version Information: Microsoft .NET Framework Version:2.0.50727.3615; ASP.NET Version:2.0.50727.3618

here’s my C# code..

        SmtpClient SmtpMail = new SmtpClient();
        SmtpMail.Host = "localhost";

        //delete session cookie
        Response.Cookies["session"].Expires = DateTime.Now.AddYears(-30);

        SmtpMail.Send(objEmail);

Answer 1

You forgot to start your SMTP server on that machine

Please don’t tell you don’t have a SMTP server on that machine. But, if you have to tell that, refer to this page and this page also

Even if you configure the local SMTP server, your emails are most likely to end up in spam folder. Better use the SMTP server of your email provider. If you are using Gmail, have a look at here