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The SMTP server requires a secure connection or the client was not authenticated. The server respons

Posted By:      Posted Date: September 07, 2010    Points: 0   Category :ASP.Net
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The SMTP server requires a secure connection or the client was not authenticated.........

i am using asp.net & have a emailing modulewhen i use gmail host i amable 2 send the mail but when i am using yahoo host i get  error msgthe yahoo id & password are right  but still getting the below msg ---------------------------Windows Internet Explorer---------------------------  ' The SMTP server requires a secure connection or the client was not authenticated. Authentication Required. '   ---------------------------OK   ---------------------------

get error The SMTP server requires a secure connection or the client was not authenticated. The serv

 Hi,I was able to send mail with no trouble before few days.Then due to some reason, i Formatted pc &  re-installed visual studio & IIS Now when i try to send mail, i get this error.The SMTP server requires a secure connection or the client was not authenticated.In my web.config file i write<mailSettings>      <smtp from="myemail@gmail.com">        <network host="smtp.gmail.com" port="587" userName="myemail" password="xxxx" defaultCredentials="false"/>      </smtp>    </mailSettings>  </system.net>  And on SEND MAIL Button click event I write ( CODE BEHIND)   Dim smtp As New System.Net.Mail.SmtpClient()  Dim smail As New System.Net.Mail.MailMessage smail.To.Add(New System.Net.Mail.MailAddress("contactperson@yahoo.co.in"))        smail.From = New System.Net.Mail.MailAddress("myemail@gmail.com")        smail.Subject = "HELLOO ..HOW R U?"        smail.IsBodyHtml = "true"        smail.Body = "" & txtmail.Text        s

Connection problem while connecting from client to server.

Hello, i am trying to connect sql server 2005 express using c#.net 3.5. my connection string is "Server=.\SQLExpress;AttachDbFilename=C:\Program Files\Microsoft SQL Server\MSSQL.2\MSSQL\DATA\db_naren.mdf;Database=db_naren; Trusted_Connection=Yes;" this is working fine when i am connecting to sql server from the local machine. When i am trying to connect from someother machine to server it is giving error like A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: SQL Network Interfaces, error: 26 - Error Locating Server/Instance Specified) i added previliges in add new administrator on SQL Server 2005 Surface Area Configuration . and i made changes on SQL Server 2005 Surface Area Configuration  page, on Database Engine --> Remote Connections -->Local and remote connections --> Using both TCP/IP and named pipelines. still same error i am getting from client machine i am using connection string as "Server=MyServer\SQLExpress;AttachDbFilename=C:\Program Files\Microsoft SQL Server\MSSQL.2\MSSQL\DATA\db_naren.mdf;Database=db_nare; Trusted_Connection=Yes;" is there any thing i need to do to connect from client machine to server?please

Error adding connection in Server Explorer: "Unable to add data connection. ExecuteScalar requires a

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.What's going on here?

Getting Unable to establish secure connection with the server


I cannot get a successful connectiong to the active directory when logging onto a web form.  Here is the code I have in the web.config: 





<add name="ADConnectionString" connectionString="LDAP://nuprecon.ad/CN=NupreconUsers,DC=nuprecon,DC=ad"/>




<trustLevel name="Full" policyFile="internal"/>

<trustLevel name="High" policyFile="web_hightrust.config"/>

<trustLevel name="Medium" policyFile="web_mediumtrust.config"/>

<trustLevel name="Low" policyFile="web_lowtrust.config"/>

<trustLevel name="Minimal" policyFile="web_minimaltrust.config"/>


<trust level="Full" originUrl=""/>

<compilation debug="true" strict="false" explicit="true"/>




<add namespace="System"/>

<add namespace="System.Collections"/>

<add namespace="System.Collections.Specialized"

C#, sockets, Windows and port 21 : A simple Client-server using TCP; connection dies after transfer



I have a thread on Stackoverflow here:


In short: 

In a very VERY simple Client-Server solution the TCP connection dies after sending 65535 bytes. This only happens when I am connected on port 21. If I change the server port to for example port 22 the connection does not die.

I am posting the simple code here for reference.


using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Net;
using System.Threading;
using System.Net.Sockets;

namespace tWorks.Samcom.PassSocketPoller
  public class PollerTest2
    private IPAddress _sutiSocketIpAddr;
    private int _sutiSocketPort;

    private Thread pollerThread = null

IPSec to secure SQL Server Connection


I'm trying to secure my SQL Server connection using IPSec. For this I made the necessary IPSec policy on the server which hosts the SQL Server. I have a very basic doubt in this scenario. Do I need to import this policy into every client machine which needs to access the SQL server ? or is there  any way that the client can automatically install this policy when tries to connect to the server ?



SQL Server Native Client Connection String



Currently we are using many config files with SQLNCLI. Is there a way if we would like to use SQLNCLI10 features without changing so many files?



connection to SQL Server files (*.mdf) require SQL server express 2005 to function properly.


I dont have the SQL EXPRESS installed instead I have SQL Standard Edition.

 I have two SQL Server instances installed.

 1- UserLT (this is sql 2000)
2- UserLT\SQL2005 (this is SQL 2005 named instance)

But when i try to add a database to my VS website project I get the following error:

Connection to SQL Server files (*.mdf) require SQL server express 2005 to function properly. please verify the installation of the component or download from the URL: go.microsoft.com/fwlink/?linkId=4925

I went in Tools>Opetions>DataBase tools>Data Connection>Sql Server Instance Name (blank for default)

and changed the "SQLEXPRESS" to "USERLT\SQL2005".

But I still get the same error message. Any ideas how i can resolve this issue?

A connection could not be made to the report server http://localhost/ReportServer.



  • I created a Report using Business Intelligence Studio. Its working working well, i can able to view records. But when i try to deploy the report an error occurs specifying that "A connection could not be made to the report server http://localhost/ReportServer. (Microsoft Report Designer)".
  • I open the IIS 7 and find out virtual directories "Reports" and "ReportServer" are available.
  • I check on the browser and type "http://localhost/reports".  I find the browser direct to this url: http://localhost/reports/Pages/Folder.aspx and find error specifying the following one:

         Error:The report server is not responding. Verify that the report server is running and can be accessed from this computer.

  • when i type http://localhost/reportmanager, i found the error:

    HTTP Error 404.0 - Not Found

    The resource you are looking for has been removed, had its name changed, or is temporarily unavailable.


ClickOnce: Deploy and Update Your Smart Client Projects Using a Central Server


ClickOnce is a new deployment technology that allows users to download and execute Windows-based client applications over the Web, a network share, or from a local disk. Users get the rich interactive and stateful experience of Windows Forms, but still have the ease of deployment and updates available to Web applications. ClickOnce applications can be run offline and support a variety of automatic and manual update scenarios.Learn all about it here.

Brian Noyes

MSDN Magazine May 2004

SOAP: Using ATL Server to Build an Asynchronous SOAP Client in Unmanaged C++


SOAP opens up a new world of Web Services, letting you make function calls across a network or the Internet. But this flexibility creates new problems when your app needs to wait for calls to return from halfway around the world. What you need is an asynchronous SOAP client that takes advantage of threading to continue execution while waiting for calls over the wire. This article covers the basics of building such a client with ATL.

Pranish Kumar and Bogdan Crivat

MSDN Magazine April 2002

I cannot send mail using gmail smtp server


 Here is my code

Dim message As System.Net.Mail.MailMessage = New System.Net.Mail.MailMessage()
        message.To.Add("from textbox field")
        message.Subject = "Testing"
        message.From = New System.Net.Mail.MailAddress("sender email ")
        message.Body = "Just Testing"

        Dim smtp As System.Net.Mail.SmtpClient = New System.Net.Mail.SmtpClient()

        Dim client As SmtpClient = New SmtpClient()
        smtp.Credentials = New System.Net.NetworkCredential("username", "password")
        smtp.Port = 25
        smtp.Host = "smtp.gmail.com"
        smtp.EnableSsl = True
        smtp.DeliveryMethod = SmtpDeliveryMethod.Network
        lblmsg.Text = "Your Email has send"


A connection that was expected to be kept alive was closed by the server.


When  i want to Call http://BDCRWSS/_vti_bin/BdcAdminService.svc Bdc AdminService in SharePoint Foundation  2010

the binding i use:

    <binding name="BasicHttpBinding_BusinessDataCatalogSharedService"
      closeTimeout="00:01:00" openTimeout="00:01:00" receiveTimeout="00:10:00"
      sendTimeout="00:01:00" allowCookies="false" bypassProxyOnLocal="false"
      hostNameComparisonMode="StrongWildcard" maxBufferSize="999999"
      maxBufferPoolSize="9999999" maxReceivedMessageSize="999999"
      messageEncoding="Mtom" textEncoding="utf-8" transferMode="Buffered"
     <readerQuotas maxDepth="99" maxStringContentLength="999999" maxArrayLength="999999"
       maxBytesPerRead="999999" maxNameTableCharCount="999999" />
     <security mode="TransportCredentialOnly">
      <transport clientCredentialType="Ntlm" proxyCredentialType="None"
       <extendedProtectionPolicy policyEnforcement="Never" />
      <message clientCredentialType="Use

passing object values from server to client problem


I get a message that x_login is not declared.  I added Dim login as String = "123", but that didn't help.  What's the problem?

code behind....

Dim Login = "123"
x_login.Value = loginID


<%@ Page Language="vb" AutoEventWireup="false" CodeBehind="Default.aspx.vb" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" >
<form id="simForm" runat="server" method='post' action='https://test.authorize.net/gateway/transact.dll'>
        <input id="HiddenValue" type="hidden" value="Initial Value" runat="server" />
        <input type='hidden' runat="server" name='x_login' id='x_login' />
        <input type='submit' runat="server" id='buttonLabel' />



Connection Pooling To SQL Server

Hi Folks,

I'm a new SQL PFE and just encountered my first SharePoint installation at a customer site. (The first of many, I'm sure.) I ran some health checks on the SQL Server and noticed 600-700 user connections from the SharePoint account. The SharePoint admins and developers are novice to junior-level, and unfamiliar with connection pooling. I've never worked with SharePoint before and don't know what it's normal behavior is or how connections should be managed by SharePoint.

They indicated the SharePoint system is relatively new and only getting a small amount of use compared to what is expected soon.

SQL Server is handling the load well right now, but if the number of connections grows proportionally to the load, this will become a performance constraint.

1. Is this a normal number of connections for SharePoint?
2. If not, where can the SharePoint staff and myself find a thorough explanation of the principles of SharePoint connection pooling?

Thanks, JDL

smtp server 5.1 in xp not sending emails


hi iam using asp.net 2.0 with c#.net.

in my application when client completes its shopping email will goes to user this works fine when there is internet connection is working fine,
if  there is some problem  in internet connection if one mail stops then all the mails will be stopped even now internet works fine,

how to resend the emails using smtp server, is there any option to resend the emails automatically when internet works fine.

can you give example which helps me.

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