asp.net 2.0 无SMTP服务也能发送邮件

void sendmail()
    {
        System.Web.Mail.MailMessage msgMail = new System.Web.Mail.MailMessage();

        //msgMail.To = "Order@labdelon-estore.com";
        msgMail.To = "ppsetserver@hotmail.com";
        msgMail.Cc = "eviuu@live.com";
        msgMail.From = TextBox2.Text.Trim();
        msgMail.Subject = "PicSure-It Contact.";

        msgMail.BodyFormat = System.Web.Mail.MailFormat.Html;
        msgMail.Body = TextBox4.Text;
        try
        {
            System.Web.Mail.SmtpMail.Send(msgMail);
        }
        catch
        {
           
        }
        Response.Redirect("Thanks.aspx?info= ");
    }