Mail Sending Source using System.Net.Mail

private void SendMail()
{
try
{
MailMessage mail = new MailMessage();
SmtpClient smtp = new SmtpClient();
mail.Body = "Hello";
mail.IsBodyHtml = true;
mail.From = new MailAddress(FROMMailID, FROMNAME);
mail.Subject = "Subject";
mail.To.Add("saravanan@dotnetsnippets.com");
if (Txtccaddr.Text.Trim().Length > 0)
mail.CC.Add(Txtccaddr.Text.Trim());
if (Txtbccaddr.Text.Trim().Length > 0)
mail.Bcc.Add(Txtbccaddr.Text.Trim());
mail.Priority = MailPriority.High;

smtp.Host = HOST IP;
smtp.Port = 25;
smtp.Send(mail);
}
catch (Exception ex)
{

}
}