/// <summary>
/// Validates SMTP credentials
/// </summary>
/// <param name="login"></param>
/// <param name="password"></param>
/// <param name="server"></param>
/// <param name="port"></param>
/// <param name="enableSsl"></param>
/// <returns></returns>
public static bool ValidateCredentials(string login, string password, string server, int port, bool enableSsl)
{
SmtpConnectorBase connector;
if (enableSsl)
{
connector = new SmtpConnectorWithSsl(server, port);
}
else
{
connector = new SmtpConnectorWithoutSsl(server, port);
}
if (!connector.CheckResponse(220))
{
return(false);
}
connector.SendData($"HELO {Dns.GetHostName()}{SmtpConnectorBase.EOF}");
if (!connector.CheckResponse(250))
{
return(false);
}
connector.SendData($"AUTH LOGIN{SmtpConnectorBase.EOF}");
if (!connector.CheckResponse(334))
{
return(false);
}
connector.SendData(Convert.ToBase64String(Encoding.UTF8.GetBytes($"{login}")) + SmtpConnectorBase.EOF);
if (!connector.CheckResponse(334))
{
return(false);
}
connector.SendData(Convert.ToBase64String(Encoding.UTF8.GetBytes($"{password}")) + SmtpConnectorBase.EOF);
if (!connector.CheckResponse(235))
{
return(false);
}
return(true);
}
/// <summary>Tests the settings.</summary>
public static Task Test(this IContainMailConfiguration config)
{
var t = new Task(() =>
{
SmtpConnectorBase connector;
if (config.MailServerEnableSsl)
connector = new SmtpConnectorWithSsl(config.MailServer, config.MailServerPort);
else
connector = new SmtpConnectorWithoutSsl(config.MailServer, config.MailServerPort);
try
{
var response = connector.CheckResponse();
if (response != 220)
throw GetException(response);
connector.SendData($"HELO {Dns.GetHostName()}{SmtpConnectorBase.EOF}");
response = connector.CheckResponse();
if (response != 250)
throw GetException(response);
connector.SendData($"AUTH LOGIN{SmtpConnectorBase.EOF}");
response = connector.CheckResponse();
if (response != 334)
throw GetException(response);
connector.SendData(Convert.ToBase64String(Encoding.UTF8.GetBytes($"{config.MailServerUsername}")) + SmtpConnectorBase.EOF);
response = connector.CheckResponse();
if (response != 334)
throw GetException(response);
connector.SendData(Convert.ToBase64String(Encoding.UTF8.GetBytes($"{config.MailServerPassword}")) + SmtpConnectorBase.EOF);
response = connector.CheckResponse();
if (response != 235)
throw GetException(response);
}
finally
{
((IDisposable) connector).Dispose();
}
}, TaskCreationOptions.LongRunning);
t.Start(TaskScheduler.Default);
return t;
}