Question

mailMessage.From = new MailAddress(fromEmailAddress);
        mailMessage.Subject = "Test";
        mailMessage.Body = "Manish";
        mailMessage.IsBodyHtml = true;
        mailMessage.To.Add(new MailAddress(toEmailAddress));
        SmtpClient smtp = new SmtpClient("smtp.gmail.com", 465);          
        smtp.EnableSsl = true;
        System.Net.NetworkCredential NetworkCred = new System.Net.NetworkCredential();
        NetworkCred.UserName = userNAme;
        NetworkCred.Password = password;
        smtp.UseDefaultCredentials = true;
        smtp.Credentials = NetworkCred;
        smtp.Send(mailMessage);

我正在尝试配置Gmail SMTP并尝试使用TSL和SSL，但上面的代码总是抛出TimeOut异常

Answer 1

我认为您需要将usedefaultcredentials设置为false。否则，将不会使用您在网络凭据中设置的用户名/密码。

Answer 2

您不希望为SmtpClient将UseDefaultCredentials设置为true，因为它将使用当前登录用户的凭据，按https://msdn.microsoft.com/en-us/library/system.net.mail.smtpclient.usedefaultcredentials%28v=vs.110%29.aspx

此外，通过web.config配置设置可能更有意义，因为任何更改都不需要重新编译和部署代码。类似的问题在这里回答：Send Email via C# through Google Apps account

如果您选择在代码中保留smtp设置，它应如下所示：

mailMessage.From = new MailAddress(fromEmailAddress);
mailMessage.Subject = "Test";
mailMessage.Body = "Manish";
mailMessage.IsBodyHtml = true;
mailMessage.To.Add(new MailAddress(toEmailAddress));
SmtpClient smtp = new SmtpClient("smtp.gmail.com", 465);          
smtp.EnableSsl = true;
smtp.Credentials = new System.Net.NetworkCredential(userNAme, password);
smtp.Send(mailMessage);

无法在C＃中使用Gmail SMTP发送邮件

2 个答案: