如何为SmtpException创建函数的重载版本？

Question

我有以下方法发送电子邮件和方法来包装异常：

public void SendEmail(SendEmailRequest emailRequest)
{
    ...
    catch (SmtpFailedRecipientsException e)
    {
        var failedRecipients = e.InnerExceptions.Select(x => x.FailedRecipient);
        LogAndReThrowWithValidMessage(e, EmailsLocalization.EmailDeliveryFailed, emailRequest.Subject, serverSettings, failedRecipients);
    }
    catch (SmtpFailedRecipientException e)
    {
        LogAndReThrowWithValidMessage(e, EmailsLocalization.EmailDeliveryFailed, emailRequest.Subject, serverSettings, new[] { e.FailedRecipient });
    }
    catch (SmtpException e)
    {
        LogAndReThrowWithValidMessage(e, EmailsLocalization.EmailSendFailedInvalidSettings, emailRequest.Subject, serverSettings);
    }
    catch (Exception e)
    {
         LogAndReThrowWithValidMessage(e, EmailsLocalization.EmailSendFailedGeneralIssues, emailRequest.Subject, serverSettings);
    }
    ...
}

private static void LogAndReThrowWithValidMessage(Exception e, string message, string logSubject, SmtpServerSettings logSettings, IEnumerable<string> failedRecipients = null)
{
    _logger.ErrorException(e,
        "Exception while trying to send message with subject '{0}' using SMTP server {1}:{2}",
         logSubject,
         logSettings.SmtpServerName,
         logSettings.SmtpPort);

    var sendingFailedException = new EmailSendingFailedException(message, e);
    var smtpException = e as SmtpException;
    if (smtpException != null)
    {
        var isGmailServerName = logSettings.SmtpServerName.Contains("gmail.com");
        if (isGmailServerName && smtpException.InnerException.Message.Contains("net_io_connectionclosed"))
        {
            sendingFailedException = new EmailSendingFailedException(EmailsLocalization.EmailSendFailedWrongPortNumber, e);
        }

        // Wrapping authentication exceptions
        if (smtpException.StatusCode == SmtpStatusCode.MustIssueStartTlsFirst || 
            smtpException.Message.Contains("AUTH"))
        {
            sendingFailedException = isGmailServerName ? 
                    new EmailSendingFailedException(EmailsLocalization.EmailSendFailedAuthenticationProblemForGmail, e) : 
                    new EmailSendingFailedException(EmailsLocalization.EmailSendFailedAuthenticationProblem, e);
        }

        // According to Yahoo's spam policy
        if (smtpException.StatusCode == SmtpStatusCode.MailboxNameNotAllowed)
        {
            sendingFailedException = new EmailSendingFailedException(EmailsLocalization.EmailSendFailedWrongFromAddress, e);
        }
    }

    if (failedRecipients != null)
    {
        sendingFailedException.FailedRecipients = failedRecipients;
    }

    throw sendingFailedException;
}

如何为SmtpException创建实现此逻辑的函数的重载版本，然后调用原始方法来记录ant wrap。此外，现在我在日志中缺少我的改进信息，如何解决这个问题？