Send Mail from Exchange Server

Hi,

I want to send mail from exchange server. I want to send mail without password. I use the following code snippet :

MailMessage msg = new MailMessage();

msg.From = new MailAddress("[email protected]");

msg.To.Add(new MailAddress("[email protected]"));

msg.Subject = "Reg : Timesheet";

msg.IsBodyHtml = true;

msg.Body = "" + strMsg + "";

SmtpClient client = new SmtpClient("IP address of server", 25);

client.Host = "IP address of server";

client.Send(msg);

But unable to send mail.. Is there any other settings to be done for exchange server ?