How to use SMTP in sending email VB.Net?

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VB

Dim clie As New SmtpClient("smtp.gmail.com", 587)
clie.Credentials = New Net.NetworkCredential(txtemail.Text, txtpass.Text)

Dim fromwho As String = "abcdef@noreply.com"
Dim towho As String = txtto.Text
Dim subject As String = txtsubject.Text
Dim body As String = txtBody.Text
clie.EnableSsl = True
clie.Send(fromwho, towho, subject, body)

I have this code above.. and it has error like this :

XML

Exception:Thrown: "A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond" (System.Net.Sockets.SocketException)
A System.Net.Sockets.SocketException was thrown: "A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond"
Time: 9/23/2015 9:17:43 AM
Thread:<No Name>[1056]

Beofre it was working but now i dont know the problem.

Posted 22-Sep-15 15:22pm

NekoNao

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[no name] 23-Sep-15 0:35am

I guess the port number is creating issue. Sometimes the port you are configuring is having issues. Try with port number 465.You can use default port 25 or enable there ports on firewall.

NekoNao 23-Sep-15 5:48am

tried port 25 but samee issue.

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Sisir Patro · Answer 1 · 2015-09-23T00:10:00

Hi,

Try like this.

VB

Dim Smtp_Server As New SmtpClient
          Dim e_mail As New MailMessage()
          Smtp_Server.UseDefaultCredentials = False
          Smtp_Server.Credentials = New Net.NetworkCredential("username@gmail.com", "password")
          Smtp_Server.Port = 587
          Smtp_Server.EnableSsl = True
          Smtp_Server.Host = "smtp.gmail.com"

          e_mail = New MailMessage()
          e_mail.From = New MailAddress(txtFrom.Text)
          e_mail.To.Add(txtTo.Text)
          e_mail.Subject = "Email Sending"
          e_mail.IsBodyHtml = False
          e_mail.Body = txtMessage.Text
          Smtp_Server.Send(e_mail)
          MsgBox("Mail Sent")

If still you are facing the same issue let me know.

Thanks,
Sisir Patro