C# SMTP 서버를 이용한 메일 발송

using System.Net.Mail;

SmtpClient client = new SmtpClient();
client.Host = "SMTP서버주소";
client.Timeout = 5000;
client.DeliveryMethod = SmtpDeliveryMethod.Network;
client.UseDefaultCredentials = false;
client.Credentials = new System.Net.NetworkCredential("인증아이디", "비번");

MailMessage MM = new MailMessage("FROM", "TO", "제목", "내용");
MM.BodyEncoding = UTF8Encoding.UTF8;
MM.DeliveryNotificationOptions = DeliveryNotificationOptions.OnFailure;
client.Send(MM);
MM.Dispose();