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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("");
			MailAddress to = new MailAddress("");
			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("");
			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);
			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.");
						Console.WriteLine("Failed to deliver message to {0}", 
            catch (Exception ex)
                Console.WriteLine("Exception caught in RetryIfBusy(): {0}", 
                        ex.ToString() );

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.