Question

This is my code to send mail (test code):

//sending mail
var message = new System.Net.Mail.MailMessage();
message.From = new MailAddress("[e-mail]");
message.To.Add(model.Mailag);
message.Subject = "Valdation d'inscription";
message.Body = "Votre inscription a été valide voici vos cordonne de conexion ID user : "+model.Idag+" Password : "+user.password;
var client = new  System.Net.Mail.SmtpClient
{
    Host = "smtp.gmail.com",
    Port = 587,
    EnableSsl = true,
    UseDefaultCredentials = false,
    Credentials = new NetworkCredential("", "")
};
client.Send(message);

When I try it I got this error:

SMTP server require secured connexion or you are not connected. Server response was :5.5.1 Authentication Required. Learn more at

on this line: client.Send(message);

Answer 1

Use the following settings when relying to GMAIL:

System.Net.Mail.SmtpClient smtp = new System.Net.Mail.SmtpClient("smtp.gmail.com");
smtp.UseDefaultCredentials = false;
var credentials = System.Net.NetworkCredential(”[e-mail]”, “yourpwd”);
smtp.Credentials = credentials;
smtp.EnableSsl = true;
smtp.Port = 587;