перехват ответа smtp-сервера через MailKit

send.cs

using System;

using MailKit.Net.Smtp;
using MailKit;
using MimeKit;

namespace TestClient
{

    class SmtpClient: MailKit.Net.Smtp.SmtpClient
    {
        protected override void OnMessageSent(MessageSentEventArgs e)
        {
            Console.WriteLine(e.Response.ToString());
            base.OnMessageSent(e);
        }
    }

    class Program
    {   
        public static void Main()
        {
            var message = new MimeMessage();
            message.From.Add(new MailboxAddress("Ilya Shipitsin", "chipitsine@kontur.ru"));
            message.To.Add(new MailboxAddress("Ilya Shipitsin", "chipitsine@gmail.com"));
            message.Subject = "How you doin'?";

            message.Body = new TextPart("plain")
            {
                Text = @"test"
            };

            using (var client = new TestClient.SmtpClient())
            {
                client.Connect("smtp.kontur", 25, false);
                client.Send(message);
              
                client.Disconnect(true);
            }
        }
    }
}