C#Windows窗体应用程序 – 使用gmail smtp发送电子邮件

我一直在尝试创建一个小程序来通过smtp.gmail.com发送电子邮件,但它总是提示我“操作已经超时”.
我知道网上有很多解决方案,但没有一个可行.

try
{
    MailMessage message = new MailMessage();
    SmtpClient smtp = new SmtpClient();

    message.From = new MailAddress("[e-mail]");
    message.To.Add(new MailAddress("[e-mail]"));
    message.Subject = "Test";
    message.Body = "Content";

    smtp.Port = 465;
    smtp.Host = "smtp.gmail.com";
    smtp.EnableSsl = true;
    smtp.UseDefaultCredentials = false;
    smtp.Credentials = new NetworkCredential("[e-mail]","pwd");
    smtp.DeliveryMethod = SmtpDeliveryMethod.Network;
    smtp.Send(message);
}
catch (Exception ex)
{
    MessageBox.Show("err: " + ex.Message);
}

有什么方法可以解决这个问题吗？

解决方法

将端口更改为587：

try
{
    MailMessage message = new MailMessage();
    SmtpClient smtp = new SmtpClient();

    message.From = new MailAddress("[e-mail]");
    message.To.Add(new MailAddress("[e-mail]"));
    message.Subject = "Test";
    message.Body = "Content";

    smtp.Port = 587;
    smtp.Host = "smtp.gmail.com";
    smtp.EnableSsl = true;
    smtp.UseDefaultCredentials = false;
    smtp.Credentials = new NetworkCredential("[e-mail]","pwd");
    smtp.DeliveryMethod = SmtpDeliveryMethod.Network;
    smtp.Send(message);
}
catch (Exception ex)
{
    MessageBox.Show("err: " + ex.Message);
}