problem with smtp mail sending

[sweatha]

Hi

I have the normal server and not the SMTP service installed. I need to send a mail once if I click a button. Can anybody help me regarding that

[DrBunchman]

Hi sweatha,

You will need to do one of the following:

Specify the name or IP address of a mail server in your code

or

Install the Default SMTP Server on your IIS. You can find it in the Add/Remove Programs, Add Components section of the Control Panel.

There is an article on the code required for sending mail here which may help you and this website has some useful tips for configuring your mail object further.

Let me know how you get on

Dr B

[sweatha]

Hi sweatha,

You will need to do one of the following:

Specify the name or IP address of a mail server in your code

or

Install the Default SMTP Server on your IIS. You can find it in the Add/Remove Programs, Add Components section of the Control Panel.

There is an article on the code required for sending mail here which may help you and this website has some useful tips for configuring your mail object further.

Let me know how you get on

Dr B

Yes I installed. Thank You...

[sweatha]

Hi

By getting the emailId from "txtTo"-TextBox and by clicking the button, I should send the email to the emailId which is in the txtTo-TextBox. For that I have given the code as

Imports System
Imports System.Net
Imports System.Web.Mail
Imports System.Net.Mail

Partial Class Default3
Inherits System.Web.UI.Page
Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click
Try

Dim emailTitle As String = "My Email Title"
Dim emailMessage As Net.Mail.MailMessage
Dim body As String = "This will appear in the body of my email"
emailMessage = New Net.Mail.MailMessage("[e-mail]" , "txtTo", emailTitle, body)
Dim mailClient As New Net.Mail.SmtpClient("urlOfEmailService.com", 25)
mailClient.Send(emailMessage)

Catch ex As Exception
End Try
End Sub

End Class


If I run the project, it is not showing any error but the mail is not getting sent.

[Plater]

*merged*

Moderator

[Curtis Rutland]

Well, you won't show any error if you use a Try Catch block, and don't do anything with the Exception.

Change your code to this:

  Catch ex As Exception
    MsgBox(ex.Message)
End Try
 

Then you will get a popup about your exception, if there is one.

Also, make sure that the sender address you chose is whitelisted on the receiver's email. You might be successfully sending mail, but being blocked or sent to junk mail.

Hi

By getting the emailId from "txtTo"-TextBox and by clicking the button, I should send the email to the emailId which is in the txtTo-TextBox. For that I have given the code as

Imports System
Imports System.Net
Imports System.Web.Mail
Imports System.Net.Mail

Partial Class Default3
Inherits System.Web.UI.Page
Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click
Try

Dim emailTitle As String = "My Email Title"
Dim emailMessage As Net.Mail.MailMessage
Dim body As String = "This will appear in the body of my email"
emailMessage = New Net.Mail.MailMessage("[e-mail]" , "txtTo", emailTitle, body)
Dim mailClient As New Net.Mail.SmtpClient("urlOfEmailService.com", 25)
mailClient.Send(emailMessage)

Catch ex As Exception
End Try
End Sub

End Class


If I run the project, it is not showing any error but the mail is not getting sent.

[sweatha]

Hi

Through smtp I have to send email by getting the "To"-Email Id from textbox named txtTo. For that I have given the coding as

Imports System
Imports System.Net
Imports System.Web.Mail
Imports System.Net.Mail
 
Partial Class Default3
    Inherits System.Web.UI.Page
    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
 
 
    End Sub
 
 
    Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click
        Dim msg As New Net.Mail.MailMessage("[e-mail]", txtTo.Text, "Re: Hello", "Hello Friend")
        Dim mySmtp As New Net.Mail.SmtpClient("IP ADDRESS")
        Try
            mySmtp.Send(msg)
            Label1.Text = "Mail Sent"
        Catch ex As Exception
            Label1.Text = ex.Message
        End Try
    End Sub
 
End Class

But once I run the project it shows the error message (on Label1) as

"Failure sending mail."
---------------------------------------------------
I have already given my issue under the topic "Problem with email sending". But just now I have changed my coding in the above manner.

[DrBunchman]

I think you'll probably find that you have McAfee of something similar blocking your smtp from sending mail. Have you got a virus scanner or firewall running on this server?

Dr B

P.S. Please remember to use the code tags (the # button) to surround your code blocks as it makes your posts much easier to read. Thanks.

[Plater]

sweatha, I have once again merged your threads on smtp email troubles.
Please DO NOT continue to double post your questions, it's against the posting guidelines.

MODERATOR


That being said, *many* smtp servers will reject/deny the sending of emails from a user until they have verified their login credentials. In your code you appear to not send user credentials so the SMTP might be rejecting it based on that.

[Curtis Rutland]

.....

        Try
            mySmtp.Send(msg)
            Label1.Text = "Mail Sent"
        Catch ex As Exception
            Label1.Text = ex.Message
        End Try
    End Sub
 
End Class

But once I run the project it shows the error message (on Label1) as

"Failure sending mail."
...

OK, that exception wasn't very detailed.

Adding another label (Label2) and adding this code into your Catch block:

Label2.Text = ex.InnerException.Message
 

So if there is another, more descriptive message, you can trace it.

Other than that, you probably have an issue external to your program blocking you.