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我正在尝试使用 google 提供的 smtp 向用户发送确认电子邮件，并在我的本地机器上进行测试。我已经编写了代码并提供了设置。
SmtpClient client = SiteUtilites.GetMailClient();
MailAddress sender = new MailAddress(coreEmail, coreDisplayName);
MailAddress receiver = new MailAddress(model.EmailAddress, model.Firstname + " " +model.Lastname);
MailAddressCollection collection = new MailAddressCollection();
MailMessage mailMessage = new MailMessage(sender, receiver);
mailMessage.IsBodyHtml = true;
mailMessage.Body = "Hello";
client.Send(mailMessage);
这是我下面的设置
String smtpServer = ConfigurationManager.AppSettings["smtpServer"];
String smtpUsername = ConfigurationManager.AppSettings["smtpUsername"];
String smtpPassword = ConfigurationManager.AppSettings["smtpPassword"];
String smtpPort = ConfigurationManager.AppSettings["smtpPort"];
SmtpClient sc = new SmtpClient(smtpServer);
NetworkCredential nc = new NetworkCredential(smtpUsername, smtpPassword);
sc.UseDefaultCredentials = false;
sc.Credentials = nc;
sc.EnableSsl = true;
sc.Port = 587;
我的网站需要以 https 运行吗？我只想在我的本地机器上测试我的脚本。
这是它给我的错误
The SMTP server requires a secure connection or the client was not authenticated. The server response was: 5.5.1 Authentication Required