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Smadhu

Member

510 Points

989 Posts

sending mail error

Sep 20, 2012 06:10 AM|LINK

i m trying to send mail from vbnet it shows error:

Server Error in '/' Application.

Server does not support secure connections.

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.Mail.SmtpException: Server does not support secure connections.

code:

Dim SmtpServer As New SmtpClient()
SmtpServer.Credentials = New _
Net.NetworkCredential("test@iqds.com", "experien")
SmtpServer.Port = 25
SmtpServer.EnableSsl = "true"
SmtpServer.Host = "mail.iqds.com"
Dim mail As New MailMessage()

mail = New MailMessage()
mail.To.Add(Email)
mail.From = New MailAddress("test@iqds.com")
mail.Body = "Registered Successfully"
' mail.Body += "successfully"
mail.Subject = "register"

SmtpServer.Send(mail)
SuccessDisplay.Text = "Added Successfully"

plz suggest

thnx

Reply

dhol.gaurav

Contributor

3998 Points

725 Posts

Re: sending mail error

Sep 20, 2012 06:54 AM|LINK

Hello,

Change SSL Enable to false, this error generate becouse your smtp is not supported to secure connection.

SmtpServer.EnableSsl = "false"

let me know if any query

Thanks,
Gaurav Dhol
Skype ID : dhol.gaurav
If My Post contains helped you, Please Mark as Answer

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SohailShaikh

Contributor

6129 Points

1172 Posts

Re: sending mail error

Sep 20, 2012 06:55 AM|LINK

i think your smpt server not support this connection please try your code wiht gmail smtp server and use gamil email accout for sending email and set SmtpServer.EnableSsl = "false"

Imports System.Net.Mail
Public Class Form1
    Private Sub Button1_Click(ByVal sender As System.Object, _
    ByVal e As System.EventArgs) Handles Button1.Click
        Try
            Dim SmtpServer As New SmtpClient()
            Dim mail As New MailMessage()
            SmtpServer.Credentials = New _
		Net.NetworkCredential("username@gmail.com", "password")
            SmtpServer.Port = 587
            SmtpServer.Host = "smtp.gmail.com"
            mail = New MailMessage()
            mail.From = New MailAddress("YOURusername@gmail.com")
            mail.To.Add("TOADDRESS")
            mail.Subject = "Test Mail"
            mail.Body = "This is for testing SMTP mail from GMAIL"
            SmtpServer.Send(mail)
            MsgBox("mail send")
        Catch ex As Exception
            MsgBox(ex.ToString)
        End Try
    End Sub
End Class

Mark As Your Answer if You think its Help you

Sohail Shaikh

Edited by SohailShaikh on Sep 20, 2012 06:56 AM
Marked as answer by Smadhu on Sep 25, 2012 07:04 AM

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Smadhu

Member

510 Points

989 Posts

Re: sending mail error

Sep 20, 2012 06:58 AM|LINK

i m able to send mail through gmail but from from my website

i removed enable.ssl="false"

but its working on local machine when i upload on webite shows 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

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.Mail.SmtpException: 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

Edited by Smadhu on Sep 20, 2012 07:05 AM

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SohailShaikh

Contributor

6129 Points

1172 Posts

Re: sending mail error

Sep 20, 2012 07:46 AM|LINK

Check this thread this prblem also discuss on serval times

http://forums.asp.net/p/1327338/3667481.aspx

Mark As Your Answer if You think its Help you

Sohail Shaikh

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msomar

Participant

843 Points

390 Posts

Re: sending mail error

Sep 20, 2012 08:02 AM|LINK

http://vb.net-informations.com/communications/vb.net_smtp_mail.htm

http://www.a1vbcode.com/snippet-3384.asp

Imports System.Web.Mail
    
Sub Main()
        Dim strMSG As String
        Dim strArgs() As String = Command.Split(",")
        Dim blnSMTP As Boolean = False
        Dim blnCC As Boolean = False
        Dim blnAttachments As Boolean = False

        Try
            Dim insMail As New MailMessage()
            With insMail
                .From = Trim(strArgs(0))
                .To = Trim(strArgs(1))
                .Subject = Trim(strArgs(2))
                .Body = Trim(strArgs(3))
                If blnCC Then .Cc = Trim(strArgs(5))
                If blnAttachments Then
                    Dim strFile As String
                    Dim strAttach() As String = Split(strArgs(6), ";")
                    For Each strFile In strAttach
                        .Attachments.Add(New MailAttachment(Trim(strFile)))
                    Next
                End If
            End With
            If blnSMTP Then SmtpMail.SmtpServer = Trim(strArgs(4))

            SmtpMail.Send(insMail)

            Console.WriteLine("Successfully sent email message" + vbCrLf)

        Catch err As Exception
            Console.WriteLine("EXCEPTION " + err.Message + vbCrLf)
        End Try

    End Sub

Edited by msomar on Sep 20, 2012 08:03 AM
Edited by msomar on Sep 20, 2012 08:05 AM

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geniusvishal

Star

14306 Points

2820 Posts

Re: sending mail error

Sep 20, 2012 08:39 AM|LINK

On the Servers tab of your POP client, enable My server requires authentication beneath Outgoing Mail Server.

Refer:

http://www.emailquestions.com/gmail/208-read-gmail-any-mail-program.html

Vishal Ranjan

My Website
www.dotnetvishal.com

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Catherine Sh...

All-Star

23382 Points

2490 Posts

Microsoft

Re: sending mail error

Sep 21, 2012 03:13 AM|LINK

Hi,

Smadhu
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

According to the description above, it seems like that you need to enable ssl on the IIS. For details, please check the link below:

http://weblogs.asp.net/scottgu/archive/2007/04/06/tip-trick-enabling-ssl-on-iis7-using-self-signed-certificates.aspx

In addition, you can check the similar thread below:

http://stackoverflow.com/questions/704636/sending-email-through-gmail-smtp-server-with-c-sharp

Best wishes,

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