手动记录的ELMAH错误不会发送电子邮件

void ErrorMail_Mailing(object sender, ErrorMailEventArgs e)
{
    // 设置邮件的收件人、发件人、主题等信息
    MailMessage mail = new MailMessage();
    mail.To = "your-email@example.com";
    mail.From = "application@example.com";
    mail.Subject = "Application Error";

    // 将错误信息添加到邮件正文中
    StringBuilder body = new StringBuilder();
    body.AppendLine("An error has occurred in the application:");
    body.AppendLine();
    body.AppendLine("Error Message: " + e.Error.Message);
    body.AppendLine("Stack Trace: " + e.Error.StackTrace);
    mail.Body = body.ToString();

    // 使用SMTP客户端发送邮件
    SmtpClient smtp = new SmtpClient();
    smtp.Send(mail);
}