SmtpFailedRecipientsException Class
The exception that is thrown when e-mail is sent using an SmtpClient and cannot be delivered to all recipients.
Assembly: System (in System.dll)
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.
The following code example resends an e-mail message that was not delivered because a mailbox was busy or unavailable.
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(); } }
public:
static void RetryIfBusy(String* server)
{
MailAddress* from = new MailAddress(S"ben@contoso.com");
MailAddress* to = new MailAddress(S"jane@contoso.com");
MailMessage* message = new MailMessage(from, to);
// message.Subject = "Using the SmtpClient class.";
message->Subject = S"Using the SmtpClient class.";
message->Body = S"Using this feature, you can send an e-mail message from an application very easily.";
// Add a carbon copy recipient.
MailAddress* copy= new MailAddress(S"Notifications@contoso.com");
message->CC->Add(copy);
SmtpClient* client = new SmtpClient(server);
// Include credentials if the server requires them.
client->Credentials = dynamic_cast<ICredentialsByHost*> (CredentialCache::DefaultNetworkCredentials);
Console::WriteLine(S"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->Exceptions->Length; i++)
{
SmtpStatusCode status = ex->Exceptions[i]->StatusCode;
if (status == SmtpStatusCode::MailboxBusy ||
status == SmtpStatusCode::MailboxUnavailable)
{
Console::WriteLine(S"Delivery failed - retrying in 5 seconds.");
System::Threading::Thread::Sleep(5000);
client->Send(message);
}
else
{
Console::WriteLine(S"Failed to deliver message to {0}", ex->FailedRecipients[i]);
}
}
}
__finally
{
client->Dispose();
}
}
System::Exception
System.Net.Mail::SmtpException
System.Net.Mail::SmtpFailedRecipientException
System.Net.Mail::SmtpFailedRecipientsException
Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.