SmtpFailedRecipientsException Class

Definition

public ref class SmtpFailedRecipientsException : System::Net::Mail::SmtpFailedRecipientException

public class SmtpFailedRecipientsException : System.Net.Mail.SmtpFailedRecipientException

[System.Serializable]
public class SmtpFailedRecipientsException : System.Net.Mail.SmtpFailedRecipientException

type SmtpFailedRecipientsException = class
    inherit SmtpFailedRecipientException
    interface ISerializable

type SmtpFailedRecipientsException = class
    inherit SmtpFailedRecipientException

[<System.Serializable>]
type SmtpFailedRecipientsException = class
    inherit SmtpFailedRecipientException
    interface ISerializable

Public Class SmtpFailedRecipientsException
Inherits SmtpFailedRecipientException

Inheritance

Object

Exception

SmtpException

SmtpFailedRecipientException

SmtpFailedRecipientsException

Attributes

SerializableAttribute

Implements

ISerializable

Examples

The following code example resends an email message that was not delivered because a mailbox was busy or unavailable.

static void RetryIfBusy( String^ server )
{
   MailAddress^ from = gcnew MailAddress( L"[email protected]" );
   MailAddress^ to = gcnew MailAddress( L"[email protected]" );
   MailMessage^ message = gcnew MailMessage( from,to );
   
   // message.Subject = "Using the SmtpClient class.";
   message->Subject = L"Using the SmtpClient class.";
   message->Body = L"Using this feature, you can send an email message from an application very easily.";
   
   // Add a carbon copy recipient.
   MailAddress^ copy = gcnew MailAddress( L"[email protected]" );
   message->CC->Add( copy );
   SmtpClient^ client = gcnew SmtpClient( server );
   
   // Include credentials if the server requires them.
   client->Credentials = dynamic_cast<ICredentialsByHost^>(CredentialCache::DefaultNetworkCredentials);
   Console::WriteLine( L"Sending an email 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( L"Delivery failed - retrying in 5 seconds." );
            System::Threading::Thread::Sleep( 5000 );
            client->Send( message );
         }
         else
         {
            Console::WriteLine( L"Failed to deliver message to {0}", ex->InnerExceptions[ i ] );
         }

      }
   }
   catch ( Exception^ ex )
   {
       Console::WriteLine(L"Exception caught in RetryIfBusy(): {0}", 
                     ex->ToString() );
   }
   finally
   {
      client->~SmtpClient();
   }
}

public static void RetryIfBusy(string server)
{
    MailAddress from = new MailAddress("[email protected]");
    MailAddress to = new MailAddress("[email protected]");
    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 email message from an application very easily.";
    // Add a carbon copy recipient.
    MailAddress copy = new MailAddress("[email protected]");
    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 email 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());
    }
}

Remarks

The InnerExceptions property contains the exceptions received while attempting to send email. The email might have been successfully delivered to some of the recipients.

Constructors

Properties

Methods

Events

Explicit Interface Implementations

Applies to