IOException: Connection closed ------- Send Mail with unity

Error when pressing the button with the StartCoroutine:

IOException: Connection closed
System.Net.Mail.SmtpClient.Read () (at <9f8c4786222746238eb929db40bf8dd1>:0)
System.Net.Mail.SmtpClient.SendCore (System.Net.Mail.MailMessage message) (at <9f8c4786222746238eb929db40bf8dd1>:0)
System.Net.Mail.SmtpClient.SendInternal (System.Net.Mail.MailMessage message) (at <9f8c4786222746238eb929db40bf8dd1>:0)
System.Net.Mail.SmtpClient.Send (System.Net.Mail.MailMessage message) (at <9f8c4786222746238eb929db40bf8dd1>:0)
Rethrow as SmtpException: Message could not be sent.
System.Net.Mail.SmtpClient.Send (System.Net.Mail.MailMessage message) (at <9f8c4786222746238eb929db40bf8dd1>:0)
Correo+<EnviarDatos>d__5.MoveNext () (at Assets/ComponentesMenu/PanelRegistro/Correo.cs:51)
UnityEngine.SetupCoroutine.InvokeMoveNext (System.Collections.IEnumerator enumerator, System.IntPtr returnValueAddress) (at C:/buildslave/unity/build/Runtime/Export/Scripting/Coroutines.cs:17)

Code (CSharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4. using UnityEngine.UI;
5. using TMPro;
6. using System.Net;
7. using System.Net.Mail;
8. using System.Net.Security;
9. using System.Security.Cryptography.X509Certificates;
10.  
11. public class Correo : MonoBehaviour
12. {
13.     public TMP_InputField NombreDeUsuario;
14.     public TMP_InputField CorreoElectronico;
15.     public TMP_InputField Contraseña;
16.     //public TMP_InputField Path;
17.     public TextMeshProUGUI error;
18.  
19.     public void SendMail()
20.     {
21.         StartCoroutine(EnviarDatos());
22.     }
23.  
24.     public IEnumerator EnviarDatos()
25.     {
26.         yield return new WaitForSeconds(0.0f);
27.         if (NombreDeUsuario.text == "" || CorreoElectronico.text == "" || Contraseña.text == "")
28.         {
29.             error.text = "Por favor, Complete todos los campos";
30.             //Debug.Log("Por favor, Complete todos los campos");
31.         }
32.         else
33.         {
34.             MailMessage mail = new MailMessage();
35.  
36.             mail.From = new MailAddress(CorreoElectronico.text);
37.             mail.To.Add("rplatinoamericasur@gmail.com");
38.             mail.Subject = NombreDeUsuario.text;
39.             mail.Body = "Mail From :" + CorreoElectronico + "/n ------------------------- /n /n" + Contraseña.text;
40.             /*if (Path.text != "")
41.             {
42.                 Attachment attachment = null;
43.                 attachment = new Attachment(Path.text);
44.                 mail.Attachments.Add(attachment);
45.             }*/
46.             SmtpClient smtpServer = new SmtpClient("imap.gmail.com");
47.             smtpServer.Port = 993;
48.             smtpServer.Credentials = new System.Net.NetworkCredential("CorreoElectronico", "Password");// as ICredentialsByHost;
49.             smtpServer.EnableSsl = true;
50.             ServicePointManager.ServerCertificateValidationCallback = delegate(object s, X509Certificate certificate, X509Chain chain, SslPolicyErrors sslPolicyErrors) { return true; };
51.             smtpServer.Send(mail);
52.             error.text = "Correo mandado con exito";
53.  
54.         }
55.     }
56. }

 

I trust that the password you are using isn't actually "Password", correct?

 

No, it's all test.

But I don't understand how this type of code works, so I ask for help

 

What do you mean it's all test, are you using your correct GMail password?

 

I tried anyway, with true data and with false data, and still I get that error

 

Problema resuelto.

Los puertos estaban mal. Gracias igual

 

Hola disculpa estoy recibiendo el mismo mensaje de error,
Al enviar un mail. en este caso me marca. System.IO.Ports: Connection closed. tengo entendido que el puerto de salida de mi dominio de mailing asignado a esta cuenta de mail no me deja salir salta el error puesto a que ese puerto no debe de estar abierto o habilitado, Lo malo es que el puerto de salida establecido me lo han dado hecho, por lo tanto no puedo cambiar nada..

Me pondré en contactó con mi proveedor de mailing en cuanto pueda. si os pasa algo similar mirar por los puertos de salida

Full error log

 

Pasa tu codigo para ver el error mas claramente

 

Never ever store credentials in a client (game, app...). Send your email from a (web) server.