public static void TestGoogleSmtpLoginViaOAuth2(string account, string refresh_token)
{
var authorizatior = new GoogleOAuth2Authorization();
var granted_access = authorizatior.RequestAccessToken(refresh_token);
if (granted_access == null)
{
return;
}
var smtp = MailClientBuilder.Smtp();
smtp.ConnectSsl("smtp.googlemail.com", 465);
smtp.Authenticate(account, granted_access.AccessToken, SaslMechanism.OAuth2);
//Do some work...
smtp.Disconnect();
}
static public bool TestSmtp(MailServerSettings settings)
{
var smtp = MailClientBuilder.Smtp();
string s_result = String.Empty;
try
{
IAsyncResult async_res;
if (settings.EncryptionType == EncryptionType.None || settings.EncryptionType == EncryptionType.StartTLS)
{
async_res = smtp.BeginConnect(settings.Url, settings.Port, null);
if (!async_res.AsyncWaitHandle.WaitOne(WAIT_TIMEOUT))
{
throw new SmtpConnectionException(MailQueueItem.CONNECTION_TIMEOUT_ERROR);
}
if (settings.AuthenticationType != SaslMechanism.None || settings.EncryptionType == EncryptionType.StartTLS)
{
smtp.SendEhloHelo();
}
if (settings.EncryptionType == EncryptionType.StartTLS)
{
smtp.StartTLS(settings.Url);
}
if (settings.AuthenticationType != SaslMechanism.None)
{
s_result = smtp.Authenticate(settings.AccountName, settings.AccountPass, settings.AuthenticationType);
}
}
else
{
async_res = smtp.BeginConnectSsl(settings.Url, settings.Port, null);
if (!async_res.AsyncWaitHandle.WaitOne(WAIT_TIMEOUT))
{
throw new SmtpConnectionException(MailQueueItem.CONNECTION_TIMEOUT_ERROR);
}
if (settings.AuthenticationType != SaslMechanism.None)
{
s_result = smtp.Authenticate(settings.AccountName, settings.AccountPass, settings.AuthenticationType);
}
}
if (settings.AuthenticationType != SaslMechanism.None && !s_result.StartsWith("+"))
{
throw new SmtpConnectionException(s_result);
}
return(true);
}
finally
{
if (smtp.IsConnected)
{
smtp.Disconnect();
}
}
}