Program no longer sending mail

[stagnit]

RESOLVED:
See post below for answer

Myself and a colleague have a program called SwiftScreen, its been out for a month now but since May 25th our program is returning an error when they fill out a form that sends us an email (through our application). My best guess is windows recently had an update of somesort but i don't know. Does anyone know a way to send mail, perferably to a gmail account, that still works using Vb.net?

I really need to fix this problem, im missing out on alot of data.



Here is the email code i'm using"

Dim message As System.Net.Mail.MailMessage
            Dim smtp As New System.Net.Mail.SmtpClient("smtp.gmail.com")
            Dim fromMailAddress As System.Net.Mail.MailAddress
            Dim toMailAddress As System.Net.Mail.MailAddress

            fromMailAddress = New System.Net.Mail.MailAddress("[email protected]")
            toMailAddress = New System.Net.Mail.MailAddress("[email protected]")

            message = New System.Net.Mail.MailMessage()
            message.From = toMailAddress
            message.To.Add(fromMailAddress)
            message.Subject = "TestFromVB"
            message.Body = "Test Message"

            smtp.Port = 587
            smtp.UseDefaultCredentials = False
            smtp.Credentials = New System.Net.NetworkCredential("[email protected]", "password")
            smtp.DeliveryMethod = Net.Mail.SmtpDeliveryMethod.Network

            smtp.Send(message)

            MessageBox.Show("sent...")

I'm using Visual Studio 2008.