ASP.net MVC Sending Mail

问题:

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);

回答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;

回答2:

I expect you will need to pass in your username, password and a port number when using smtp.gmail.com

Try using

var client = new SmtpClient("smtp.gmail.com");
client.Port = 587;
client.Credentials = new NetworkCredential("accountID", "accountPassword");
client.EnableSsl = true;

client.Send(message);

回答3:

when "SMTP server require secured connectionor you are not connected. Server response was :5.5.1 Authentication Required. Learn more at on this line client.Send(message)" occurs while sending mail means,

you have 2-step verification in your gmail account... remove it and run your code.. it works