c# - MailKit 中的 SMTP 服务器意外断开连接

Question

我正在使用 mailkit 在 ASP.NET Core 中发送邮件 这是我的代码

var emailMessage = new MimeMessage();

emailMessage.From.Add(new MailboxAddress("Gorrolo", "gorollobikes@gmail.com"));
emailMessage.To.Add(new MailboxAddress("", email));
emailMessage.Subject = subject;
emailMessage.Body = new TextPart("HTML") { Text = message };

using (var client = new SmtpClient())
{
    client.LocalDomain = "http://localhost:54850";
    await client.ConnectAsync("smtp.gmail.com", 465, false);
    client.Authenticate("Myemail", "Mypassword");
    client.Send(emailMessage);
    //await client.emailMessage(emailMessage).ConfigureAwait(false);
    //await client.DisconnectAsync(true).ConfigureAwait(false);
}

行内

await client.ConnectAsync("smtp.gmail.com", 465, false)

调试器播下以下错误 SMTP 服务器意外断开连接

Answer 1

这就是 2021 年对我有用的东西

void SendGmail(MimeMessage mm)
{
    mm.From.Add(new MailboxAddress("The Email Service", "user@email.com"));
    using SmtpClient client = new(new ProtocolLogger("smtp.log"));
    client.ServerCertificateValidationCallback = (s, c, h, e) => true;
    client.Connect("smtp.gmail.com", 587, SecureSocketOptions.StartTls);
    client.Authenticate("user@email.com", "My$uperSecr3tPa55w0rd"); // app password
    client.Send(mm);
    client.Disconnect(true);
}