Doesn't work with native smtp client

[erhan355]

Hi ,
I am using version 9.0.1 before upgrading to that version I haven't faced with any issue.It seems now It doesn't work with native smtp client anymore.

Here is my config
var options = new SmtpServerOptionsBuilder()
.ServerName(_smtpSettings.Server)
.Endpoint(
endpointBuilder =>
{
endpointBuilder.Port(9028, false).AllowUnsecureAuthentication(true).AuthenticationRequired();

            }
        ).Build();
    serviceProvider.Add(new SampleUserAuthenticator());
    var server = new smtp.SmtpServer(options, serviceProvider);

Smtp client code

var client = new SmtpClient
{
Port = 9028,
Host = "localhost",
UseDefaultCredentials = false,
DeliveryMethod= SmtpDeliveryMethod.Network
};
client.Credentials = new NetworkCredential("test", "test");

    var mail = new MailMessage
    {
        From = new MailAddress("assda@asda.com"),
        Subject = "Smtp Server Test",

        Body = "Smtp Server Test",

        IsBodyHtml = true
    };

    mail.To.Add(new MailAddress("xx@gmail.com"));

    //CreateAttachments(mail);
    client.DeliveryMethod = SmtpDeliveryMethod.Network;
    client.Send(mail);
    return Task.CompletedTask;

Never hitting SampleUserAuthenticator and gives following error

System.Net.Mail.SmtpException: 'The SMTP server requires a secure connection or the client was not authenticated. The server response was: authentication required'