WPF实现发送邮件功能，邮件发不出去怎么回事。求助！

Question

MailMessage message = new MailMessage();
message.To.Add("[e-mail]");
message.From = new MailAddress("[e-mail]");
message.Subject = "SUBJECT SUBJECT";
message.SubjectEncoding = Encoding.UTF8;
message.Body = "Body Body";
message.BodyEncoding = Encoding.UTF8;
message.IsBodyHtml = false;
message.Priority = MailPriority.Normal;
SmtpClient smtp = new SmtpClient();
smtp.Credentials = new System.Net.NetworkCredential("654321","password");
smtp.Host = "smtp.qq.com";
smtp.Port = 25;
object userState = message;
smtp.SendAsync(message,userState);

上面是代码，不知道什么问题，运行不报错，就是收不到邮件。我是用的qq邮箱发的。

Answer 1

检查下用户名密码端口和smtp服务器，另外你的qq邮箱是否启用了smtp