关于c＃：SMTP服务器不响应`SmtpClient`连接尝试。


SMTP server does not respond to `SmtpClient` connection attempt. How do I fix this?

本问题已经有最佳答案，请猛点这里访问。

我试图编写用.NET发送电子邮件的代码。这就是我目前为止所拥有的：

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MailMessage mail = new MailMessage("[email protected]", address);
mail.Subject = subject;
mail.Body = body;
client.Host ="smtp.gmail.com";
client.Port = 587;
client.Send(e);

问题是我得到以下异常：

Unhandled Exception: System.Net.Mail.SmtpException: Failure sending mail.

System.Net.WebException: Unable to connect to the remote server.

System.Net.Sockets.SocketException: A connection attempt failed because the connected party
did not properly respond after a period of time, or established connection failed because connected host has failed to respond 173.194.66.109:587

号

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

// ...

MailAddress maFrom = new MailAddress("","<display_name>");
MailAddress maTo = new MailAddress("","<display_name>");
const string sPassword ="<password>";
const string sSubject ="<subject>";
const string sBody ="<body>";

new SmtpClient
{
    Host ="smtp.gmail.com",
    Port = 587,
    EnableSsl = true,
    DeliveryMethod = SmtpDeliveryMethod.Network,
    UseDefaultCredentials = false,
    Credentials = new NetworkCredential(maFrom.Address, sPassword)
}.Send(new MailMessage(maFrom, maTo) { Subject = sSubject, Body = sBody });