SendMailLogFile.cs

public static void EnviaCorreoInterno(string cAsunto, List<string> destinatarios, string cBody, List<string> cAdjuntos, int port, bool ssl, string usr, string pass, string host, string correo)
        {
            var mail = new MailMessage();
            bool succesSend = true;

            mail.From = new MailAddress(correo);

            var smtp = new SmtpClient
            {
                Port = port,
                EnableSsl = ssl,
                DeliveryMethod = SmtpDeliveryMethod.Network,
                UseDefaultCredentials = false,
                Credentials = new NetworkCredential(usr, pass),
                Host = host
            };

            foreach (var destinatario in destinatarios)
            {
                mail.To.Add((new MailAddress(destinatario)));
            }

            foreach (var cAdjunto in cAdjuntos)
            {
                mail.Attachments.Add(new Attachment(cAdjunto));
            }

            mail.IsBodyHtml = true;

            mail.Subject = cAsunto;
            mail.Body = cBody;
            try
            {
                ServicePointManager.ServerCertificateValidationCallback = AcceptAllCertifications;
                smtp.Send(mail);
            }
            catch (SmtpFailedRecipientException ex)
            {
                succesSend = false;
                MessageBox.Show("Error: " + ex.Message, "Error al enviar mensaje a algun destinatario: " + ex.FailedRecipient,
                        MessageBoxButtons.OK, MessageBoxIcon.Error);
                LogErrors.LogError(ex.Message + "\r\n" + ex.StackTrace);
            }
            catch (SmtpException ex)
            {
                succesSend = false;
                MessageBox.Show("Error: " + ex.Message, "Error al enviar mensaje",
                    MessageBoxButtons.OK, MessageBoxIcon.Error);
                LogErrors.LogError(ex.Message + "\r\n" + ex.StackTrace);
            }
            
            if (succesSend)
                Console.WriteLine("Mensaje Enviado");
            
        }

        //Metodo para hacer una exclusion al error de certificados propios o no actualizados
        public static bool AcceptAllCertifications(object sender, System.Security.Cryptography.X509Certificates.X509Certificate certification, System.Security.Cryptography.X509Certificates.X509Chain chain, System.Net.Security.SslPolicyErrors sslPolicyErrors)
        {
            return true;
        }