Fake Email Sender

[kalo93]

I have this code to send an email:

Imports System.Net.Mail
Public Class Form1

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        If msgTo.Text = "" Or msgFrom.Text = "" Or msgSubject.Text = "" Or msgBody.Text = "" Or smtpHost.Text = "" Or smtpPort.Text = "" Then
            MsgBox("You must fill out everything!", MsgBoxStyle.Information, "Error")
            Exit Sub
        End If
        On Error GoTo msgError
        Dim smtpServer As New SmtpClient()
        Dim mail As New MailMessage()
        smtpServer.Credentials = New Net.NetworkCredential("email", "password")
        smtpServer.Port = smtpPort.Text
        smtpServer.Host = smtpHost.Text
        If SSL.Checked = True Then
            smtpServer.EnableSsl = True
        Else
            smtpServer.EnableSsl = False
        End If
        smtpServer.EnableSsl = SSL.Checked
        mail = New MailMessage()
        mail.From = New MailAddress(msgFrom.Text)
        mail.To.Add(msgTo.Text)
        mail.Subject = msgSubject.Text
        mail.Body = msgBody.Text
        smtpServer.Send(mail)
        MsgBox("Email was sent to:" & msgTo.Text)
        Exit Sub
msgError:
        MsgBox("Couldn't send email, please make sure the SMTP Settings are correct.", MsgBoxStyle.Critical, "Error")
    End Sub

    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        smtpHost.Text = "smtp.live.com"
    End Sub
End Class

But obviously, it sends them an email from the email that requires the password.

But I want to send emails that appear from what's entered in the 'from' textbox.

How would I go about that?

[Radjesh Klauke]

It seems like to me that, it also count for this poster, lately people are asking how to disguise or how to "hack" a php-form. Where are we going to? Fortunately there are enough people who ask "normal" questions. Thanks for that.

Now back to topic: Where do you want to get the password from?

[jmcilhinney]

It's got nothing to do with the email address. It's the SMTP server that's the issue. You can send email from any address you want. What matters is that the system sending the message is authorised to do so on the specified SMTP server. The credentials you are supplying are for the SMTP account, not for the email address.

That said, it may be that some SMTP servers reject messages from a domain other than their own. If so then, again, that's down to the SMTP server and nothing inherent in the SMTP protocol or the System.Net.Mail namespace.

[kalo93]

Do you know any smtp servers that don't need authorization?

[Radjesh Klauke]

??? 99,9% of the SMPT servers need authorization.

[kalo93]

Not really...

[Pc_Not_Mac]

Don't Spam people.