Asp.netSendEmail SMTP服务器需要安全连接或客户端未经过身份验证

Question

我正在使用谷歌smtp发送电子邮件。代码在我的本地计算机中正常运行。但在生产服务器上，我收到错误消息为SendEmail SMTP服务器需要安全连接或客户端未经过身份验证。服务器响应为：5.5.1需要身份验证。

了解更多信息

我试过这个， client.UseDefaultCredentials = true; 将其设置为false但不起作用。

Answer 1

尝试使用此代码发送Google邮件

            MailMessage oMail = new MailMessage();
            SmtpClient smtpClient = new SmtpClient();
            string FromMailID = "yourgmailid@gmail.com";
            string UserName = "GmailUsername";
            string Password = "GmailPassword";

            MailAddress fromAddress = new MailAddress(FromMailID);
            if (FilePath != "")//If attached file otherwise comment
            {
                Attachment PDFfile = new Attachment(FilePath);
                oMail.Attachments.Add(PDFfile);
            }
            oMail.From = fromAddress;
            oMail.To.Add(ToMailID);
            oMail.Subject = Subject;
            oMail.IsBodyHtml = true;
            oMail.Body = Mailcontent.ToString();
            smtpClient.Host = "smtp.gmail.com";   // We use gmail as our smtp client
            smtpClient.Port = 25;//localhost
            smtpClient.UseDefaultCredentials = false;
            smtpClient.EnableSsl = true;
            smtpClient.UseDefaultCredentials = true;
            smtpClient.DeliveryMethod = SmtpDeliveryMethod.Network;
            smtpClient.Credentials = new System.Net.NetworkCredential(UserName, Password);

            smtpClient.Send(oMail);