SMTP Gmail超时

Question

不确定为什么会这样。我搜索过的每个地方都告诉我，我正确地做到了这一点。但每次我尝试发送邮件时，它都会在smtpserver.Send(mail)

上超时

private void emailReport(string email_address,int begDatabaseCount, int endDatabaseCount)
        {
            SmtpClient smtpserver = new SmtpClient();
            MailMessage mail = new MailMessage();
            smtpserver.EnableSsl = true;
            smtpserver.Port = 465;
            smtpserver.Host = "smtp.gmail.com";           
            smtpserver.Credentials = new NetworkCredential("mtaylor@atr.com", "password");
            smtpserver.UseDefaultCredentials = false;
            mail = new MailMessage();
            mail.From = new System.Net.Mail.MailAddress("mtaylor@atr.com", "ATR Reports");
            mail.To.Add(email_address);
            mail.Subject = "FNAS Report - " + DateTime.Now;
            mail.Body += "<u><b>FNAS Report for " + DateTime.Now + "</u></b>" + "\r\n \r\n";
            mail.Body += "Beginning Database Count - " + begDatabaseCount + "\r\n" + "\r\n";
            mail.Body += "End Database Count - " + endDatabaseCount + "\r\n" + "\r\n";
            mail.Body += "<b>Total Imported Orders = " + (endDatabaseCount - begDatabaseCount) + "<b>" + "\r\n" + "\r\n";
            mail.IsBodyHtml = true;

            smtpserver.Send(mail);
        }

端口465 = 1分钟后超时

端口587 =＆＃34; 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。 ＆＃34;

Answer 1

正如@kostyan所说，正确的端口是587，但要进行身份验证，您需要允许从您的Gmail帐户中安全性较低的应用程序进行访问。 试一试here

它对我有用，希望它有帮助..

Answer 2

你确定端口，在我的代码中我把它作为587，否则看起来很相似并且有效。

Answer 3

这个帖子帮助了我。我不确定为什么这个代码有效，而我的代码没有。

Sending email in .NET through Gmail

using System.Net;
using System.Net.Mail;

var fromAddress = new MailAddress("from@gmail.com", "From Name");
var toAddress = new MailAddress("to@example.com", "To Name");
const string fromPassword = "fromPassword";
const string subject = "Subject";
const string body = "Body";

var smtp = new SmtpClient
           {
               Host = "smtp.gmail.com",
               Port = 587,
               EnableSsl = true,
               DeliveryMethod = SmtpDeliveryMethod.Network,
               UseDefaultCredentials = false,
               Credentials = new NetworkCredential(fromAddress.Address, fromPassword)
           };
using (var message = new MailMessage(fromAddress, toAddress)
                     {
                         Subject = subject,
                         Body = body
                     })
{
    smtp.Send(message);
}

Answer 4

我发现当我尝试使用google smtp欺骗发件人地址时（例如，使用FromAddress作为我的gmail帐户名称之外的其他内容）我收到了身份验证错误消息或只是超时。