StatusCode Property
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SmtpException.StatusCode Property

 

Gets the status code returned by an SMTP server when an e-mail message is transmitted.

Namespace:   System.Net.Mail
Assembly:  System (in System.dll)

public SmtpStatusCode StatusCode { get; set; }

Property Value

Type: System.Net.Mail.SmtpStatusCode

An SmtpStatusCode value that indicates the error that occurred.

The following code example displays the value of this property.

public static void RetryIfBusy(string server)
{
	MailAddress from = new MailAddress("ben@contoso.com");
	MailAddress to = new MailAddress("jane@contoso.com");
	MailMessage message = new MailMessage(from, to);
	// message.Subject = "Using the SmtpClient class.";
	message.Subject = "Using the SmtpClient class.";
	message.Body = @"Using this feature, you can send an e-mail message from an application very easily.";
	// Add a carbon copy recipient.
	MailAddress copy = new MailAddress("Notifications@contoso.com");
	message.CC.Add(copy);
	SmtpClient client = new SmtpClient(server);
	// Include credentials if the server requires them.
	client.Credentials = (ICredentialsByHost)CredentialCache.DefaultNetworkCredentials;
	Console.WriteLine("Sending an e-mail message to {0} using the SMTP host {1}.",
		 to.Address, client.Host);
	try
	{
		client.Send(message);
	}
	catch (SmtpFailedRecipientsException ex)
	{
		for (int i = 0; i < ex.InnerExceptions.Length; i++)
		{
			SmtpStatusCode status = ex.InnerExceptions[i].StatusCode;
			if (status == SmtpStatusCode.MailboxBusy ||
				status == SmtpStatusCode.MailboxUnavailable)
			{
				Console.WriteLine("Delivery failed - retrying in 5 seconds.");
				System.Threading.Thread.Sleep(5000);
				client.Send(message);
			}
			else
			{
				Console.WriteLine("Failed to deliver message to {0}", 
				    ex.InnerExceptions[i].FailedRecipient);
			}
		}
	}
          catch (Exception ex)
          {
              Console.WriteLine("Exception caught in RetryIfBusy(): {0}", 
                      ex.ToString() );
          }
      }

.NET Framework
Available since 2.0
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