server time out while connectiong via ssl

This application was sending out orders without errors when smtp wasn't secured.
Now the clients webmail server was changed to ssl.
After making the changes the server times out.
I did some research and found this .ConnectType = SmtpConnectType.ConnectSSLAuto
I'm anable to assign the SmtpServer.ConnectType = SmtpConnectType.ConnectSSLAuto.

This is my code.

Dim SmtpServer As New SmtpClient()
        Dim mail As New MailMessage()
            SmtpServer.UseDefaultCredentials = False
            SmtpServer.Credentials = New Net.NetworkCredential(jonDoe@Domain.com, srvPass)
            SmtpServer.Port = 465
            SmtpServer.Host = mail.Domain.com
            SmtpServer.EnableSsl = true
            mail = New MailMessage With {.From = New MailAddress(frome)
        }
            mail.To.Add(Too)
            mail.Subject = Subject
            mail.Body = InputBox("Enter the body here", "Body")
            For Each Row In attch_tbl.Rows
                OE_File = Row("OE").ToString.TrimStart("0c")
                OE_File = "*" & OE_File & "*"
                For Each foundFile As String In My.Computer.FileSystem.GetFiles("N:\",
        Microsoft.VisualBasic.FileIO.SearchOption.SearchTopLevelOnly, OE_File)
                    If foundFile <> "" Then
                        mail.Attachments.Add(New Attachment(foundFile))
                        FileNum = FileNum + 1
                    End If
                Next
            Next
            If FileNum >0 Then
                SmtpServer.Send(mail)
               end if