I have an asp.net website and I allready did .Dispose() here is my code below;

try {

        MailMessage newMail = new MailMessage(MailFrom, MailTo,

MailSubject, MailMsg);

        if (MailAttachment != "")
        {
            Attachment data = new Attachment(MailAttachment,

MediaTypeNames.Application.Octet); newMail.Attachments.Add(data); } newMail.BodyEncoding = System.Text.Encoding.UTF8; newMail.IsBodyHtml = true;

        SmtpClient client = new SmtpClient("192.168.2.205");
        client.Credentials = CredentialCache.DefaultNetworkCredentials;
        client.Send(newMail);

        newMail.Attachments.Dispose();
        newMail.Dispose();

        DeleteAttachment(MailAttachment);

        lblSuccess.Text = "Basvurunuz alinmistir tesekkürler.";
        lblSuccess.Visible = true;
        ClearForm();
    }
    catch (Exception ex)
    {
        lblSuccess.Text = ex.Message;
        //lblSuccess.Text = "Bir sorun olustu bir daha deneyiniz.";
        lblSuccess.Visible = true;
    }

But i' m getting the same error, it' s running fine in my localhost but in server i' m getting this error. How can i fix it?