Web Forms :: SMTP Email Error - Unable To Read Data From Transport Connection
May 7, 2015
I can not send mail, this error means ?
Code:
using (MailMessage mm = new MailMessage("soporte@linknred.com", correo1.Text.Trim()))
{
mm.Subject = "Activacion de Cuenta";
string body = "Hola " + correo1.Text.Trim() + ", " + "Bienvenido a LinknRed";
body += "<br /><br />Por Favor haz Click en el Enlace Siguiente Para Activar Tu Cuenta";
[Code] ....
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Similar Messages:
Oct 9, 2010
I'm trying to send an email from my ASP.NET website using the following code (obviously replacing the hostname, username and password with the actual values):
Public Shared Sub Send(ByVal ToEmail As String, ByVal FromEmail As String, ByVal Subject As String, ByVal Message As String)
Dim mm As New MailMessage(FromEmail, ToEmail, Subject, Message)
Dim smtp As New SmtpClient("hostname")
smtp.Credentials = New NetworkCredential("username", "password")
smtp.Send(mm)
End Sub
When trying to send out the mail I'm receiving this error: "Unable to read data from the transport connection: net_io_connectionclosed."
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Nov 16, 2010
I'm getting this error when I'm send email from my page,
Unable to read data from the transport connection: net_io_connectionclosed
Here my code:
MailMessage msgMail = new MailMessage();
msgMail.From = new MailAddress("info@mydomain.com");
msgMail.To.Add(new MailAddress("emaill@otherdomain.com"));
msgMail.Subject = "Message from web";
msgMail.IsBodyHtml = true;
msgMail.Body = "Test message";
SmtpClient Client = new SmtpClient();
Client.Port = 587;
Client.Host = "smtp server name";
Client.ServicePoint.MaxIdleTime = 1;
Client.Send(msgMail);
msgMail.Dispose();
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Jun 16, 2015
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.Runtime.InteropServices.COMException: The message could not be sent to the SMTP server. The transport error code was 0x80040217. The server response was not available
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.
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Apr 1, 2010
I have my code here, it works fine from my home, where my user is administrator, and I am connected to internet via a cable network.
But, problem is when I try this code from my work place, it does not work. Shows error:
"unable to connect to the remote server"
From a different machine in the same network:
"A socket operation was attempted to an unreachable network 209.xxx.xx.52:25"
I checked with our network admin, and he assured me that all the mail ports are open [25,110, and other ports for gmail].
Then, I logged in with administrative privilege, there was a little improvement, it did not show any error, but the actual email was never received.
note that, the code was tested from development environment, visual studio 2005 and 2008.
try
{
MailMessage mail_message = new MailMessage("xxxxx@y7mail.com", txtToEmail.Text, txtSubject.Text, txtBody.Text);
SmtpClient mail_client = new SmtpClient("SMTP.y7mail.com");
NetworkCredential Authentic = new NetworkCredential("xxxxx@y7mail.com", "xxxxx");
mail_client.UseDefaultCredentials = true;......
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Sep 13, 2010
I'm using Visual Studio 2008, and my database is SQL Server 2000.
I want to add a connection to the Server Explorer in VS. The Data source is Microsoft SQL Server (SqlClient). After entering in all my information and I click Test Connection, it is successful.
But when I click OK, I get the error:
Unable to add data connection. ExecuteScalar requires an open and available connection. The connection's current state is closed.
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Jan 12, 2011
i'm trying to send email through gmail account
i get this error:
The SMTP server requires a secure connection or the client was not authenticated. The server response was: 5.5.1 Authentication Required. Learn more at
web config is like below:
[Code]....
and my code :
[Code]....
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Aug 18, 2015
I want to send a email without using gmail domain but its giving error given below...
The SMTP server requires a secure connection or the client was not authenticated. The server response was: Relaying not allowed - sender domain not local
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Oct 14, 2010
my website sends email just fine on another host. I should not really have to change anything to make it work on this webhost. However, I have followed the instructions for this host and it is not working. Here is my current web.config.
[Code]....
I am getting my mail message printed at the top of my browser with the correct information. Why isn't this going through the mail server?
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Sep 30, 2010
I have VS 2010 professional. I am trying to open "ASP.Net Configuration" through Project -> ASP.Net Configuration.
It pops up the Notification about the ASP.Net Development Server localhost but doesn't open ASP.Net Configuration in the default browser.I clicked on the Root Url (by double clicking on the 'development server' at the right bottom from Notification Manager).
It throws following error
"An error was encountered. Please return to the previous page and try again."
Clicking on "How do i use this tool".It opened page with error.
Tool Has Timed Out
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Jul 15, 2010
I have a web application which will send email when user changes his/her passwords and also some invitation emails from the webpage.I have used VS2008 to develop this application. On my development machine the emails are send using the provided credentials as follows:
[Code]....
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May 16, 2012
Got Error while tried to send email through smtp
my code is >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
Protected Sub Submitbutton_Click(sender As Object, e As System.EventArgs) Handles Submitbutton.Click
Dim EMail1 As New MailMessage
EMail1.From = New MailAddress("Receiver")
EMail1.[To].Add(New MailAddress("Sender"))
EMail1.Subject = Firstnametextbox.Text + lastnametextbox.Text + "Register "
EMail1.Body = " This is content "
[Code] .....
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Apr 20, 2012
{"Unable to read data from the transport connection: An existing connection was forcibly closed by the remote host."}
I get the above error when sending email...
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Jun 13, 2012
I have used this code
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Net.Mail;
[Code] ...
Failure sending mail.
SMTP Exception
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Jun 16, 2015
How to fix this error,
"The SMTP server requires a secure connection or the client was not authenticated. The server response was: 5.5.1 Authentication Required. Learn more at"
[URL].....
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Apr 16, 2010
I am unable to understand. Hopefully someone out there has faced a similar issue and knows the fix. I am creating DAL for my project using class library. In my class library I want to store the connection string in APP.Config file and I have created and saved it.
The problem is when I try to access my connection string by name using ConfigurationManager.ConnectionStrings[Name], it returns null. When I try to access connection string using number like ConfigurationManager.ConnectionStrings[0] It returns a strange connection string i.e. (data source=.\SQLEXPRESS;Integrated Security=SSPI;AttachDBFilename=|DataDirectory|aspnetdb.mdf;User Instance=true)
I want to clearify here that I have not deployed the website yet and its on my local file system so there is no link of this library with IIS.
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Jun 5, 2010
I previously used a datasource and a connection string to connect to my database on sql server and all orked fine. The connection string was saved in my web.config file and is: ....
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Jul 23, 2010
I am using VS2008 and oracle 10g ODP.Net. The oracle database that I used in the connection is working and tested it using sql plus.The connection string when used in a GriDView works perfectly. Now when I created a new listview control with the same connection it gives an error.Database schema could not be retrieved for this connection. Please make sure connection settings are correct and the database is online
Object reference not set to an instance of an object at VSDataObjectSupport (478,6)
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Sep 24, 2010
I am trying to send a simple email through the following code:
protected void email_Click(object sender, EventArgs e)
{
System.Net.Mail.MailMessage msgMail = new System.Net.Mail.MailMessage();
msgMail.From = new System.Net.Mail.MailAddress("veerab@orbees.com");
msgMail.To.Add(new System.Net.Mail.MailAddress("murthyp@orbees.com"));
msgMail.Subject = "Request:Joing into the myitem.Title.ToString()";
msgMail.IsBodyHtml = true;
string strBody = "test mail";
msgMail.Body = strBody;
System.Net.Mail.SmtpClient client = new System.Net.Mail.SmtpClient();
}
I have installed the SMTP server on my local machine. The folders in mail root have all the permissions. My mails stay in the Queue folder for sometime and then they go to the Badmail folder. I am receiving the following error: Unable to deliver this message because the follow error was encountered: "This message is a delivery status notification that cannot be delivered.". The specific error code was 0xC00402C7. The message sender was <>. The message was intended for the following recipients.
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Oct 11, 2012
I am created a from sending mails. I have tried ur code.. But I am getting under error.
The SMTP server requires a secure connection or the client was not authenticated. The server response was: 5.5.1 Authentication Required
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Nov 21, 2011
I want to send emails using SMTP server in ASP.Net. I amusing C#
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Jul 23, 2010
We're having an error similar to the one detailed here. We get the error noted above when trying to do AD authentication from our .net (3.5) mvc 2 app. This is our first .net mvc app ...
http://forums.asp.net/t/1161047.aspx
- We are re-using a forms auth library written for a .Net 2 app
- that library/app/config used a service account with min. privileges for binding to AD
- This error occurs in VS 2008, have not tried deploying the app to a server yet (a little early for that)
- like the other user at the previously referenced thread, I can get the 'unable to establish ...' error to go away and display the log on page by putting *MY* credentials in instead of the service account (but not successfully authenticate)
- moving the service account into the same AD OU as my account does not seem to change it ... only using my account credentials does.
- trust level is set to full
Is this some odd permissions trick that is new with .Net 3.5 (even though the ADmembershipProvider is still a 2.0 libary)? This should have nothing to do with MVC itself.
Config looks like this (very standard, like every one else's)
[Code]....
The line/portion highlighted in the debug/stacktrace is:
type="System.Web.Security.ActiveDirectoryMembershipProvider, System.Web, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a"
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Jun 15, 2010
Strange System.Data.SqlClient.SqlException
Error at the transport level when sending a request to the server. (Provider: Shared Memory Provider, error: 0 - Since both ends of the canal there are no processes.)
I've got this exception on my Web Site every time after restarting my SqlServer on simple request like this :
if (System.Web.HttpContext.Current.User.IsInRole("Administrator"))
but after I do refresh the page with this codebehind error disappears.
How to handle this error and where it comes from ?
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Sep 1, 2010
I have the following form and trying to click a button and email through an SMTP server.
[Code]....
Code behind:
[Code]....
Web.config file:
[Code]....
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Aug 30, 2010
I am not able to send a mail using my smtp detail with C#.
I am using all my smtp credentials for sending a mail but its not sending mail,displaying exception like Mailbox unavailable........
i am looking for a solution from last 3 days,
SmtpClient client = new SmtpClient();
client.Host = "mail.abc.com";
client.DeliveryMethod = SmtpDeliveryMethod.Network;
client.Credentials = new System.Net.NetworkCredential("xxxxx", "qqqq");
[Code].....
this is the code i am using.
<mailSettings>
<smtp from="sales@rrrrr.com" deliveryMethod="Network">
<network host="mail.abc.com" password="qqqq" port=25 userName="xxxxx"/>
</smtp>
</mailSettings>
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