"Sridhar" <Srid***@discussions.microsoft.com> wrote in message
news:103168A6-4032-48C0-A284-44A458985C30@microsoft.com...
> Hi,
>
>  I have created a windows application to send emails using vs 2005 in
> vb.net. I am having problems sending the emails. The operating system on
> which this application is run is windows vista business. we have an
> exchange
> server 2007 that is in the same network. I am trying to send the emails
> using
> the exchange server with the following code.
>
> Private Sub btnSendEmail_Click(ByVal sender As System.Object, ByVal e As
> System.EventArgs) Handles btnSendEmail.Click
>        Dim errMsg As String
>        Dim ToAddress As String
>        Dim FromAddress As String
>        'Dim mailman As New Chilkat.MailMan
>        Try
>            ToAddress = "t*@mycompany.com"
>            FromAddress = "f***@mycompany.com"
>            Dim mm As New MailMessage(FromAddress, ToAddress)
>
>            mm.Subject = "Test"
>            mm.Body = "Test Email"
>            mm.IsBodyHtml = False
>
>            Dim smtp As New SmtpClient
>            smtp.Host = "exchangeserver ip address"
>            smtp.Port = 25
>            'smtp.se()
>            smtp.Credentials = New
> System.Net.NetworkCredential("exchangeserveripaddress\myusername",
> "mypassword")
>            smtp.UseDefaultCredentials = False
>            smtp.DeliveryMethod = SmtpDeliveryMethod.Network
>            Try
>                smtp.Send(mm)
>            Catch ex As Exception
>                errMsg = ex.ToString()
>            End Try
>
>        Catch ex As Exception
>
>        End Try
>
> Following is the error that I am receiving when I run the code.
>
> System.Net.Mail.SmtpException: Failure sending mail. --->
> System.Net.WebException: Unable to connect to the remote server --->
> System.Net.Sockets.SocketException: No connection could be made because
> the
> target machine actively refused it
>   at System.Net.Sockets.Socket.DoConnect(EndPoint endPointSnapshot,
> SocketAddress socketAddress)
>   at System.Net.Sockets.Socket.InternalConnect(EndPoint remoteEP)
>   at System.Net.ServicePoint.ConnectSocketInternal(Boolean connectFailure,
> Socket s4, Socket s6, Socket& socket, IPAddress& address,
> ConnectSocketState
> state, IAsyncResult asyncResult, Int32 timeout, Exception& exception)
>   --- End of inner exception stack trace ---
>   at System.Net.ServicePoint.GetConnection(PooledStream PooledStream,
> Object owner, Boolean async, IPAddress& address, Socket& abortSocket,
> Socket&
> abortSocket6, Int32 timeout)
>   at System.Net.PooledStream.Activate(Object owningObject, Boolean async,
> Int32 timeout, GeneralAsyncDelegate asyncCallback)
>   at System.Net.PooledStream.Activate(Object owningObject,
> GeneralAsyncDelegate asyncCallback)
>   at System.Net.ConnectionPool.GetConnection(Object owningObject,
> GeneralAsyncDelegate asyncCallback, Int32 creationTimeout)
>   at System.Net.Mail.SmtpConnection.GetConnection(String host, Int32 port)
>   at System.Net.Mail.SmtpTransport.GetConnection(String host, Int32 port)
>   at System.Net.Mail.SmtpClient.GetConnection()
>   at System.Net.Mail.SmtpClient.Send(MailMessage message)
>   --- End of inner exception stack trace ---
>   at System.Net.Mail.SmtpClient.Send(MailMessage message)
>   at WindowsApplication1.Form1.btnSendEmail_Click(Object sender, EventArgs
> e) in C:\Users\sduggireddy\Documents\Visual Studio
> 2005\Projects\WindowsApplication1\WindowsApplication1\Form1.vb:line 162
>
> I am not knowing how to debug this. Please let me know.
>
> Thanks

"Ged" wrote:

> Hi Sridhar
>
> Looking at the error stack, the line
>
> "System.Net.Sockets.SocketException: No connection could be made because the
> target machine actively refused it"
>
> sticks out for me.
>
> So, a couple of questions.
>
> 1. Does the exchange server allow you to send using SMTP ?
> 2. Is Exchange listening on port 25 ?
> 3. Are your credentials correct?
>
> I would get a standard mail client (i.e. Windows Mail, Thunderbird etc) and
> see if it can send email via exchange server using SMTP.
>
>
> --
> Ged Moretta
> www.appsense.com
>
> -----------------------------------------------------------------------
> This signature isn't automatic. I have to type it manually every time.
>
>
> "Sridhar" <Srid***@discussions.microsoft.com> wrote in message
> news:103168A6-4032-48C0-A284-44A458985C30@microsoft.com...
> > Hi,
> >
> >  I have created a windows application to send emails using vs 2005 in
> > vb.net. I am having problems sending the emails. The operating system on
> > which this application is run is windows vista business. we have an
> > exchange
> > server 2007 that is in the same network. I am trying to send the emails
> > using
> > the exchange server with the following code.
> >
> > Private Sub btnSendEmail_Click(ByVal sender As System.Object, ByVal e As
> > System.EventArgs) Handles btnSendEmail.Click
> >        Dim errMsg As String
> >        Dim ToAddress As String
> >        Dim FromAddress As String
> >        'Dim mailman As New Chilkat.MailMan
> >        Try
> >            ToAddress = "t*@mycompany.com"
> >            FromAddress = "f***@mycompany.com"
> >            Dim mm As New MailMessage(FromAddress, ToAddress)
> >
> >            mm.Subject = "Test"
> >            mm.Body = "Test Email"
> >            mm.IsBodyHtml = False
> >
> >            Dim smtp As New SmtpClient
> >            smtp.Host = "exchangeserver ip address"
> >            smtp.Port = 25
> >            'smtp.se()
> >            smtp.Credentials = New
> > System.Net.NetworkCredential("exchangeserveripaddress\myusername",
> > "mypassword")
> >            smtp.UseDefaultCredentials = False
> >            smtp.DeliveryMethod = SmtpDeliveryMethod.Network
> >            Try
> >                smtp.Send(mm)
> >            Catch ex As Exception
> >                errMsg = ex.ToString()
> >            End Try
> >
> >        Catch ex As Exception
> >
> >        End Try
> >
> > Following is the error that I am receiving when I run the code.
> >
> > System.Net.Mail.SmtpException: Failure sending mail. --->
> > System.Net.WebException: Unable to connect to the remote server --->
> > System.Net.Sockets.SocketException: No connection could be made because
> > the
> > target machine actively refused it
> >   at System.Net.Sockets.Socket.DoConnect(EndPoint endPointSnapshot,
> > SocketAddress socketAddress)
> >   at System.Net.Sockets.Socket.InternalConnect(EndPoint remoteEP)
> >   at System.Net.ServicePoint.ConnectSocketInternal(Boolean connectFailure,
> > Socket s4, Socket s6, Socket& socket, IPAddress& address,
> > ConnectSocketState
> > state, IAsyncResult asyncResult, Int32 timeout, Exception& exception)
> >   --- End of inner exception stack trace ---
> >   at System.Net.ServicePoint.GetConnection(PooledStream PooledStream,
> > Object owner, Boolean async, IPAddress& address, Socket& abortSocket,
> > Socket&
> > abortSocket6, Int32 timeout)
> >   at System.Net.PooledStream.Activate(Object owningObject, Boolean async,
> > Int32 timeout, GeneralAsyncDelegate asyncCallback)
> >   at System.Net.PooledStream.Activate(Object owningObject,
> > GeneralAsyncDelegate asyncCallback)
> >   at System.Net.ConnectionPool.GetConnection(Object owningObject,
> > GeneralAsyncDelegate asyncCallback, Int32 creationTimeout)
> >   at System.Net.Mail.SmtpConnection.GetConnection(String host, Int32 port)
> >   at System.Net.Mail.SmtpTransport.GetConnection(String host, Int32 port)
> >   at System.Net.Mail.SmtpClient.GetConnection()
> >   at System.Net.Mail.SmtpClient.Send(MailMessage message)
> >   --- End of inner exception stack trace ---
> >   at System.Net.Mail.SmtpClient.Send(MailMessage message)
> >   at WindowsApplication1.Form1.btnSendEmail_Click(Object sender, EventArgs
> > e) in C:\Users\sduggireddy\Documents\Visual Studio
> > 2005\Projects\WindowsApplication1\WindowsApplication1\Form1.vb:line 162
> >
> > I am not knowing how to debug this. Please let me know.
> >
> > Thanks
>
>

"Sridhar" wrote:

> Hi Ged,
>
>    Thanks for the reply. I am sure that our exchange server will allow to
> send emails through smtp. We have a .net 1.1 windows application which uses
> chilkat.net dll to send the emails. when i looked at the code, I saw that we
> are setting a property smtphost. so I think our exchange server 2007 will
> send emails via smtp.
>
> Regarding the exchange server using port 25 I tested this using telnet. when
> I do telnet exchangeipaddress 25 it is connected. but I did this test on
> another machine. when I do the same test on my computer it says "could not
> opeb connection to the host on port 25"
>
> Like I said before I am using windows vista business edition. I am thinking
> that the firewall is blocking it or something like that. I am not knowing how
> to unblock.
>
> Please let me know.
>
> Thanks,
>
> "Ged" wrote:
>
> > Hi Sridhar
> >
> > Looking at the error stack, the line
> >
> > "System.Net.Sockets.SocketException: No connection could be made because the
> > target machine actively refused it"
> >
> > sticks out for me.
> >
> > So, a couple of questions.
> >
> > 1. Does the exchange server allow you to send using SMTP ?
> > 2. Is Exchange listening on port 25 ?
> > 3. Are your credentials correct?
> >
> > I would get a standard mail client (i.e. Windows Mail, Thunderbird etc) and
> > see if it can send email via exchange server using SMTP.
> >
> >
> > --
> > Ged Moretta
> > www.appsense.com
> >
> > -----------------------------------------------------------------------
> > This signature isn't automatic. I have to type it manually every time.
> >
> >
> > "Sridhar" <Srid***@discussions.microsoft.com> wrote in message
> > news:103168A6-4032-48C0-A284-44A458985C30@microsoft.com...
> > > Hi,
> > >
> > >  I have created a windows application to send emails using vs 2005 in
> > > vb.net. I am having problems sending the emails. The operating system on
> > > which this application is run is windows vista business. we have an
> > > exchange
> > > server 2007 that is in the same network. I am trying to send the emails
> > > using
> > > the exchange server with the following code.
> > >
> > > Private Sub btnSendEmail_Click(ByVal sender As System.Object, ByVal e As
> > > System.EventArgs) Handles btnSendEmail.Click
> > >        Dim errMsg As String
> > >        Dim ToAddress As String
> > >        Dim FromAddress As String
> > >        'Dim mailman As New Chilkat.MailMan
> > >        Try
> > >            ToAddress = "t*@mycompany.com"
> > >            FromAddress = "f***@mycompany.com"
> > >            Dim mm As New MailMessage(FromAddress, ToAddress)
> > >
> > >            mm.Subject = "Test"
> > >            mm.Body = "Test Email"
> > >            mm.IsBodyHtml = False
> > >
> > >            Dim smtp As New SmtpClient
> > >            smtp.Host = "exchangeserver ip address"
> > >            smtp.Port = 25
> > >            'smtp.se()
> > >            smtp.Credentials = New
> > > System.Net.NetworkCredential("exchangeserveripaddress\myusername",
> > > "mypassword")
> > >            smtp.UseDefaultCredentials = False
> > >            smtp.DeliveryMethod = SmtpDeliveryMethod.Network
> > >            Try
> > >                smtp.Send(mm)
> > >            Catch ex As Exception
> > >                errMsg = ex.ToString()
> > >            End Try
> > >
> > >        Catch ex As Exception
> > >
> > >        End Try
> > >
> > > Following is the error that I am receiving when I run the code.
> > >
> > > System.Net.Mail.SmtpException: Failure sending mail. --->
> > > System.Net.WebException: Unable to connect to the remote server --->
> > > System.Net.Sockets.SocketException: No connection could be made because
> > > the
> > > target machine actively refused it
> > >   at System.Net.Sockets.Socket.DoConnect(EndPoint endPointSnapshot,
> > > SocketAddress socketAddress)
> > >   at System.Net.Sockets.Socket.InternalConnect(EndPoint remoteEP)
> > >   at System.Net.ServicePoint.ConnectSocketInternal(Boolean connectFailure,
> > > Socket s4, Socket s6, Socket& socket, IPAddress& address,
> > > ConnectSocketState
> > > state, IAsyncResult asyncResult, Int32 timeout, Exception& exception)
> > >   --- End of inner exception stack trace ---
> > >   at System.Net.ServicePoint.GetConnection(PooledStream PooledStream,
> > > Object owner, Boolean async, IPAddress& address, Socket& abortSocket,
> > > Socket&
> > > abortSocket6, Int32 timeout)
> > >   at System.Net.PooledStream.Activate(Object owningObject, Boolean async,
> > > Int32 timeout, GeneralAsyncDelegate asyncCallback)
> > >   at System.Net.PooledStream.Activate(Object owningObject,
> > > GeneralAsyncDelegate asyncCallback)
> > >   at System.Net.ConnectionPool.GetConnection(Object owningObject,
> > > GeneralAsyncDelegate asyncCallback, Int32 creationTimeout)
> > >   at System.Net.Mail.SmtpConnection.GetConnection(String host, Int32 port)
> > >   at System.Net.Mail.SmtpTransport.GetConnection(String host, Int32 port)
> > >   at System.Net.Mail.SmtpClient.GetConnection()
> > >   at System.Net.Mail.SmtpClient.Send(MailMessage message)
> > >   --- End of inner exception stack trace ---
> > >   at System.Net.Mail.SmtpClient.Send(MailMessage message)
> > >   at WindowsApplication1.Form1.btnSendEmail_Click(Object sender, EventArgs
> > > e) in C:\Users\sduggireddy\Documents\Visual Studio
> > > 2005\Projects\WindowsApplication1\WindowsApplication1\Form1.vb:line 162
> > >
> > > I am not knowing how to debug this. Please let me know.
> > >
> > > Thanks
> >
> >