troubleshooting Question

Bulk email app pauses on SMTP.Send

Avatar of grpmis
grpmis asked on
ExchangeVisual Basic.NETEmail Protocols
7 Comments1 Solution680 ViewsLast Modified:
This bulk email app was sending emails at 225/minute and now its at about 80/minute.  When it pauses, it pauses for about 6 seconds. If I break while running in debug mode, at the time of the pause, it's always stopped on the actual SMTP SEND command.  My code is below...
            'SEND THE EMAIL
            Dim mail As New MailMessage()
            mail.From = New MailAddress("")

            Dim smtp As New SmtpClient("")
            smtp.Port = 25
            smtp.Credentials = New System.Net.NetworkCredential("UID", "PWD")
            mail.Subject = "Reference your " & VarYear & " " & VarMake & " " & VarModel & "(" & VarName & ")"
            mail.Body = txtModified.Text
            mail.IsBodyHtml = True

                            LstError.Items.Add(VarRecNum & ": Could not send, " & VarCustEmailAddress)
                            VarNotSent = True
                        End Try
Any ideas on why it pauses periodically... how can I prevent it.
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