.NET Framework Class Library SmtpFailedRecipientsException Class This API supports the .NET Framework infrastructure and is not intended to be used directly from your code. The exception that is thrown when e-mail is sent using an SmtpClient and cannot be delivered to all recipients.
Inheritance Hierarchy
Namespace:
System.Net.Mail
Assembly:
System (in System.dll)
Syntax
<SerializableAttribute> _
Public Class SmtpFailedRecipientsException _
Inherits SmtpFailedRecipientException _
Implements ISerializable
[SerializableAttribute]
public class SmtpFailedRecipientsException : SmtpFailedRecipientException,
ISerializable
[SerializableAttribute]
public ref class SmtpFailedRecipientsException : public SmtpFailedRecipientException,
ISerializable
[<SerializableAttribute>]
type SmtpFailedRecipientsException =
class
inherit SmtpFailedRecipientException
interface ISerializable
end
The SmtpFailedRecipientsException type exposes the following members.
Constructors
Properties
Methods
Events
|
| Name | Description |
|---|
.gif) | SerializeObjectState | Occurs when an exception is serialized to create an exception state object that contains serialized data about the exception. (Inherited from Exception.) |
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Explicit Interface Implementations
Remarks
The InnerExceptions property contains the exceptions received while attempting to send e-mail. The e-mail might have been successfully delivered to some of the recipients.
Examples
The following code example resends an e-mail message that was not delivered because a mailbox was busy or unavailable.
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() );
}
}
static void RetryIfBusy( String^ server )
{
MailAddress^ from = gcnew MailAddress( L"ben@contoso.com" );
MailAddress^ to = gcnew MailAddress( L"jane@contoso.com" );
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 e-mail message from an application very easily.";
// Add a carbon copy recipient.
MailAddress^ copy = gcnew MailAddress( L"Notifications@contoso.com" );
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 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( 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();
}
}
Version Information
.NET FrameworkSupported in: 4, 3.5, 3.0, 2.0 .NET Framework Client ProfileSupported in: 4, 3.5 SP1
Platforms
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role not supported), 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.
Thread Safety
Any public static ( Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.
See Also
|
Biblioteca de clases de .NET Framework SmtpFailedRecipientsException (Clase) Esta API es compatible con la infraestructura de .NET Framework y no está diseñada para utilizarse directamente desde el código. La excepción que se produce cuando se envía un correo electrónico utilizando un SmtpClient y no se puede enviar a todos los destinatarios.
Jerarquía de herencia
Espacio de nombres:
System.Net.Mail
Ensamblado:
System (en System.dll)
Sintaxis
<SerializableAttribute> _
Public Class SmtpFailedRecipientsException _
Inherits SmtpFailedRecipientException _
Implements ISerializable
[SerializableAttribute]
public class SmtpFailedRecipientsException : SmtpFailedRecipientException,
ISerializable
[SerializableAttribute]
public ref class SmtpFailedRecipientsException : public SmtpFailedRecipientException,
ISerializable
[<SerializableAttribute>]
type SmtpFailedRecipientsException =
class
inherit SmtpFailedRecipientException
interface ISerializable
end
El tipo SmtpFailedRecipientsException expone los siguientes miembros.
Constructores
Métodos
Eventos
|
| Nombre | Descripción |
|---|
| SerializeObjectState | Se produce cuando se serializa una excepción para crear un objeto de estados de excepción que contiene datos serializados sobre la excepción. (Se hereda de Exception). |
Arriba
Implementaciones explícitas de interfaces
Comentarios
La propiedad InnerExceptions contiene las excepciones recibidas al intentar enviar correo electrónico. El correo electrónico podría haberse enviado correctamente a algunos de los destinatarios.
Ejemplos
El ejemplo de código siguiente vuelve a enviar el mensaje de correo electrónico que no se ha podio entregar porque el buzón estaba ocupado o no disponible.
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() );
}
}
static void RetryIfBusy( String^ server )
{
MailAddress^ from = gcnew MailAddress( L"ben@contoso.com" );
MailAddress^ to = gcnew MailAddress( L"jane@contoso.com" );
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 e-mail message from an application very easily.";
// Add a carbon copy recipient.
MailAddress^ copy = gcnew MailAddress( L"Notifications@contoso.com" );
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 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( 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();
}
}
Información de versión
.NET FrameworkCompatible con: 4, 3.5, 3.0, 2.0 .NET Framework Client ProfileCompatible con: 4, 3.5 SP1
Plataformas
Windows 7, Windows Vista SP1 o posterior, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (no se admite Server Core), Windows Server 2008 R2 (se admite Server Core con SP1 o posterior), Windows Server 2003 SP2
.NET Framework no admite todas las versiones de todas las plataformas. Para obtener una lista de las versiones compatibles, vea Requisitos de sistema de .NET Framework.
Seguridad para subprocesos
Todos los miembros static ( Shared en Visual Basic) públicos de este tipo son seguros para la ejecución de subprocesos. No se garantiza que los miembros de instancias sean seguros para la ejecución de subprocesos.
Vea también
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