Error with sending email via smtp

[aaronliunumber2]

[aaronliunumber2]

Unable to read data from the transport connection: net_io_connectionclosed. 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.IO.IOException: Unable to read data from the transport connection: net_io_connectionclosed.

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:

[IOException: Unable to read data from the transport connection: net_io_connectionclosed.] System.Net.Mail.SmtpReplyReaderFactory.ProcessRead(Byte[] buffer, Int32 offset, Int32 read, Boolean readLine) +712 System.Net.Mail.SmtpReplyReaderFactory.ReadLines(SmtpReplyReader caller, Boolean oneLine) +305 System.Net.Mail.SmtpReplyReaderFactory.ReadLine(SmtpReplyReader caller) +23 System.Net.Mail.SmtpConnection.GetConnection(ServicePoint servicePoint) +752 System.Net.Mail.SmtpTransport.GetConnection(ServicePoint servicePoint) +279 System.Net.Mail.SmtpClient.GetConnection() +54 System.Net.Mail.SmtpClient.Send(MailMessage message) +1841

[SmtpException: Failure sending mail.] System.Net.Mail.SmtpClient.Send(MailMessage message) +2777 FoundryMissionsCom.Helpers.EmailHelper.SendEmail(List1 recipients, String subject, String body) +395 FoundryMissionsCom.Controllers.<Register>d__15.MoveNext() +1126 System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) +13891908 System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) +61 System.Web.Mvc.Async.TaskAsyncActionDescriptor.EndExecute(IAsyncResult asyncResult) +93 System.Web.Mvc.Async.<>c__DisplayClass37.<BeginInvokeAsynchronousActionMethod>b__36(IAsyncResult asyncResult) +22 System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethod(IAsyncResult asyncResult) +69 System.Web.Mvc.Async.AsyncInvocationWithFilters.<InvokeActionMethodFilterAsynchronouslyRecursive>b__3d() +72 System.Web.Mvc.Async.<>c__DisplayClass46.<InvokeActionMethodFilterAsynchronouslyRecursive>b__3f() +386 System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethodWithFilters(IAsyncResult asyncResult) +69 System.Web.Mvc.Async.<>c__DisplayClass2b.<BeginInvokeAction>b__1c() +38 System.Web.Mvc.Async.<>c__DisplayClass21.<BeginInvokeAction>b__1e(IAsyncResult asyncResult) +186 System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeAction(IAsyncResult asyncResult) +59 System.Web.Mvc.Controller.<BeginExecuteCore>b__1d(IAsyncResult asyncResult, ExecuteCoreState innerState) +29 System.Web.Mvc.Async.WrappedAsyncVoid1.CallEndDelegate(IAsyncResult asyncResult) +65 System.Web.Mvc.Controller.EndExecuteCore(IAsyncResult asyncResult) +53 System.Web.Mvc.Async.WrappedAsyncVoid1.CallEndDelegate(IAsyncResult asyncResult) +36 System.Web.Mvc.Controller.EndExecute(IAsyncResult asyncResult) +38 System.Web.Mvc.MvcHandler.<BeginProcessRequest>b__5(IAsyncResult asyncResult, ProcessRequestState innerState) +44 System.Web.Mvc.Async.WrappedAsyncVoid1.CallEndDelegate(IAsyncResult asyncResult) +65 System.Web.Mvc.MvcHandler.EndProcessRequest(IAsyncResult asyncResult) +38 System.Web.CallHandlerExecutionStep.OnAsyncHandlerCompletion(IAsyncResult ar) +178

[aaronliunumber2]

Dear Aaron Liu,

Hello, Thank you for contacting Seekdotnet Technical Support. Please look into our picture that we've attached on this ticket. From our iis web server in smtp email menu, it showing an error in line 40 in your web.config file related to your script enableSsl="false" . For now we have removed this script enableSsl="false" and the error is not showing anymore in our IIS web server. We have also tried to telnet from your web server to your mail server and the telnet connection result is succesfull which means there is no problem for the mail connection from web server to your mail server. Perhaps, if you still got these error, please advise us the step to reproduce the error. Please kindly check it again at your end.

Thank you

Kind Regards Seekdotnet Support Team