internal MailWriter SendMail(MailAddress sender, MailAddressCollection recipients, string deliveryNotify,
bool allowUnicode, out SmtpFailedRecipientException exception)
{
if (sender == null)
{
throw new ArgumentNullException(nameof(sender));
}
if (recipients == null)
{
throw new ArgumentNullException(nameof(recipients));
}
if (GlobalLog.IsEnabled && recipients.Count > 0)
{
GlobalLog.Assert("SmtpTransport::SendMail()|recepients.Count <= 0");
}
MailCommand.Send(_connection, SmtpCommands.Mail, sender, allowUnicode);
_failedRecipientExceptions.Clear();
exception = null;
string response;
foreach (MailAddress address in recipients)
{
string smtpAddress = address.GetSmtpAddress(allowUnicode);
string to = smtpAddress + (_connection.DSNEnabled ? deliveryNotify : string.Empty);
if (!RecipientCommand.Send(_connection, to, out response))
{
_failedRecipientExceptions.Add(
new SmtpFailedRecipientException(_connection.Reader.StatusCode, smtpAddress, response));
}
}
if (_failedRecipientExceptions.Count > 0)
{
if (_failedRecipientExceptions.Count == 1)
{
exception = _failedRecipientExceptions[0];
}
else
{
exception = new SmtpFailedRecipientsException(_failedRecipientExceptions, _failedRecipientExceptions.Count == recipients.Count);
}
if (_failedRecipientExceptions.Count == recipients.Count)
{
exception.fatal = true;
throw exception;
}
}
DataCommand.Send(_connection);
return(new MailWriter(_connection.GetClosableStream()));
}
internal MailWriter SendMail(MailAddress sender, MailAddressCollection recipients, string deliveryNotify, out SmtpFailedRecipientException exception)
{
if (sender == null)
{
throw new ArgumentNullException("sender");
}
if (recipients == null)
{
throw new ArgumentNullException("recipients");
}
MailCommand.Send(this.connection, SmtpCommands.Mail, sender.SmtpAddress);
this.failedRecipientExceptions.Clear();
exception = null;
foreach (MailAddress address in recipients)
{
string str;
if (!RecipientCommand.Send(this.connection, this.connection.DSNEnabled ? (address.SmtpAddress + deliveryNotify) : address.SmtpAddress, out str))
{
this.failedRecipientExceptions.Add(new SmtpFailedRecipientException(this.connection.Reader.StatusCode, address.SmtpAddress, str));
}
}
if (this.failedRecipientExceptions.Count > 0)
{
if (this.failedRecipientExceptions.Count == 1)
{
exception = (SmtpFailedRecipientException)this.failedRecipientExceptions[0];
}
else
{
exception = new SmtpFailedRecipientsException(this.failedRecipientExceptions, this.failedRecipientExceptions.Count == recipients.Count);
}
if (this.failedRecipientExceptions.Count == recipients.Count)
{
exception.fatal = true;
throw exception;
}
}
DataCommand.Send(this.connection);
return(new MailWriter(this.connection.GetClosableStream()));
}