c# - 使用 MailKit 从 gmail 检索电子邮件

Question

我正在使用下面的代码来检索电子邮件。但是我在尝试连接服务器时遇到了 Socket 异常（client.Connect(uri, cancel.Token);）。

未处理的异常：System.Net.Sockets.SocketException：连接超时

using MailKit;
using MimeKit;
using System.Net;
using System.Threading;
using MailKit.Net.Pop3;

namespace TestMail
{
class Program
{
    public static void Main (string[] args)
    {

            using (var client = new Pop3Client ()) {

            var Server  = "gmail.com";
            var Port = "995";
            var UseSsl = false;
            var credentials = new NetworkCredential("abc@gmail.com", "abc");
            var cancel = new CancellationTokenSource ();
            var uri = new Uri(string.Format("pop{0}://{1}:{2}", (UseSsl ? "s" : ""), Server, Port));

            //Connect to email server
            client.Connect(uri, cancel.Token);
            client.AuthenticationMechanisms.Remove ("XOAUTH2");
            client.Authenticate (credentials, cancel.Token);

            //Fetch Emails
            for (int i = 0; i < client.Count; i++) {
                var message = client.GetMessage (i);
                Console.WriteLine ("Subject: {0}", message.Subject);
            }

            //Disconnect Connection
            client.Disconnect(true);
        }
    }

}

}

Answer 1

我很确定您需要使用pop.gmail.com而不仅仅是gmail.com作为服务器字符串。

Answer 2

使用下面的代码我只是在我的一个项目中测试它并且它运行良好

   using (var client = new Pop3Client()) {
 // For demo-purposes, accept all SSL certificates (in case the server supports STARTTLS) 
 client.ServerCertificateValidationCallback = (s, c, h, e) => true; 
 client.SslProtocols = System.Security.Authentication.SslProtocols.Tls12;
 client.Connect("pop.gmail.com", "995", true);
 client.AuthenticationMechanisms.Remove("XOAUTH2"); 
 client.Authenticate(MailUsername, MailPassword);
..
....
......
}