Question

Here is the code which calls the sendmail method. The problem is that only the first call of sendmail sends the mail to the receiver. The second time when sendmail is called , it gets executed perfectly but never delivers any mail. If I put the application in debug mode and then execute it step by step both the mails get delivered. It seemed like the execution speed of the program is so fast that something goes wrong. Therefore I kept a delay below send function, so it started working fine for me, But I don’t think it is a perfect solution. Anybody has any clue what is going on here.

        if (!String.IsNullOrEmpty(SendMailAdmin))
        {
        SendMail(SendMailFrom, SendMailAdmin, Subject, AdminMessageText + "<br>" + MessageText);
        }
        if (!String.IsNullOrEmpty(SendMailOwner))
        {
        SendMail(SendMailFrom, SendMailOwner, Subject, OwnerMessageText + "<br>" + MessageText);
        }

     public void SendMail(String MessageFrom, String MessageTo, String MessageSubject, String MessageBody)
            {
                MailMessage Message = new MailMessage();
                Message.Priority = MailPriority.High;
                Message.From = new MailAddress(MessageFrom);
                Message.To.Add(MessageTo);

                Message.Subject = MessageSubject;
                Message.IsBodyHtml = true;
                Message.Body = MessageBody;

                try
                {
                    SmtpClient client = new SmtpClient(SMTPServer, Convert.ToInt32(SMTPPort));

                    client.UseDefaultCredentials = false;
                    client.Credentials = new NetworkCredential("{myusername}", "{mypassword}");

                    client.Send(Message);
System.Threading.Thread.Sleep(3000);

                }
                catch
                {
                    throw;
                }
            }

Answer 1

I personally think the only thing that’ll work for you at this point is the delay code .@Shadow is right , this is how servers are configured