notification Email by Upload

Hi. I just started an internship. my boss want me to programm a uplaod function for a website. it´s done, it works. now he want to get a email everytime a upload happens. i can´t figure out, why my code is crashing. everytime it says uncatched exception but i catched it. please help me. here the code:


public void sendMail(
string absender = "[email protected]",
string empfaenger = "[email protected]",
string betreff = "test",
string nachricht = "testinhalt",
string server = "smtp.mail.yahoo.com",
int port = 465,
string user = "[email protected]",
string passwort = "testpassword")
{
MailMessage Email = new MailMessage();
Email.From = new MailAddress(absender);
Email.To.Add(empfaenger);
Email.Subject = betreff;
Email.Body = nachricht;
SmtpClient MailClient = new SmtpClient(server, port);
try
{
MailClient.Send(Email);
}
catch (SmtpFailedRecipientsException ex)
{
for (int i = 0; i < ex.InnerExceptions.Length; i++)
{
SmtpStatusCode status = ex.InnerExceptions.StatusCode;
if (status == SmtpStatusCode.MailboxBusy ||
status == SmtpStatusCode.MailboxUnavailable)
{
Console.WriteLine("Delivery failed - retrying in 5 seconds.");
System.Threading.Thread.Sleep(500);
MailClient.Send(Email);
}
else
{
Console.WriteLine("Failed to deliver message to {0}",
ex.InnerExceptions.FailedRecipient);
}
}`enter code here`
}
try
{
MailClient.Send(Email);
}
catch (SmtpException ex)
{
Console.WriteLine("Fehler beim Senden der E-Mail\n\n{0}", ex.Message);
}
Console.ReadKey();
if (user.Length > 0 && user != string.Empty)
{
MailClient.Credentials = new System.Net.NetworkCredential(user, passwort);
MailClient.EnableSsl = true;
}MailClient.Send(Email);
}

 

Thank you alot guys. I found it. Yahoo itself is the Problem. It blocked my emails