Sending a mail : SSL authentication error

Question

Hi everyone,

I am basically trying to send a mail from Unity, and I really don't know why but I get an SSL authentication error when calling the function. Here is my .NET code so far, would strongly appreciate any kind of advice :)

 var client = new System.Net.Mail.SmtpClient("smtp.gmail.com", 587)
         {
             Credentials = (ICredentialsByHost)new System.Net.NetworkCredential("MyMail", "MyPWD"),
             EnableSsl = true
         };
 
         client.Send("MyMail", "MyMail", "test", "testbody");

Answer 1

Answer by sas_88 · May 13, 2015 at 07:29 AM

Check with this

 using UnityEngine;
 using System.Collections;
 using System;
 using System.Net;
 using System.Net.Mail;
 using System.Net.Security;
 using System.Security.Cryptography.X509Certificates;
 
 public class chkmail : MonoBehaviour 
 {
     void Start ()
     {
         MailMessage mail = new MailMessage();
 
         mail.From = new MailAddress("youraddress@gmail.com");
         mail.To.Add("youraddress@gmail.com");
         mail.Subject = "Test Mail";
         mail.Body = "This is for testing SMTP mail from GMAIL";
 
         SmtpClient smtpServer = new SmtpClient("smtp.gmail.com");
 
         smtpServer.Port = 587;
         smtpServer.Credentials = new System.Net.NetworkCredential("example@gmail.com", "example") as ICredentialsByHost;
         smtpServer.EnableSsl = true;
         ServicePointManager.ServerCertificateValidationCallback = 
             delegate(object s, X509Certificate certificate, X509Chain chain, SslPolicyErrors sslPolicyErrors) 
         { return true; };
         smtpServer.Send(mail);
     }
 }

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Griga123 · May 13, 2015 at 07:53 AM 0

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Thanks for your feedback ! This trick works fine but seems to bypass any SSL security so it might not be safe in the long run : /

Sending a mail : SSL authentication error

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