import_logs.py error

I have piwik 1.8.4 and i am having following error to get logs in piwik.

./import_logs.py -d 255 --url=http://owa.example.com /var/log/httpd/access_log --idsite=6 --token-auth=1f9cfe934cb53b1ffb3477ab74906944
2012-10-09 14:49:10,470: [DEBUG] Accepted hostnames: all
2012-10-09 14:49:10,470: [DEBUG] Piwik URL is: http://owa.example.com
2012-10-09 14:49:10,471: [DEBUG] Authentication token token_auth is: 1f9cfe934cb53b1ffb3477ab74906944
2012-10-09 14:49:10,471: [DEBUG] Resolver: static
2012-10-09 14:49:10,715: [DEBUG] Error when connecting to Piwik: ''
2012-10-09 14:49:12,956: [DEBUG] Error when connecting to Piwik: ''
2012-10-09 14:49:15,221: [DEBUG] Error when connecting to Piwik: '‘
Traceback (most recent call last):
File “./import_logs.py”, line 1376, in
resolver = config.get_resolver()
File “./import_logs.py”, line 461, in get_resolver
return StaticResolver(self.options.site_id)
File “./import_logs.py”, line 800, in init
’SitesManager.getSiteFromId’, idSite=self.site_id
File “./import_logs.py”, line 783, in call_api
return self._call_wrapper(self._call_api, None, None, method, **kwargs)
File “./import_logs.py”, line 774, in _call_wrapper
raise Piwik.Error(message)
main.Error: ‘’

Are you sure that you can connect from the system where you are running the log importer to the system running the Piwik?
Try a connect with telnet for example: telnet owa.example.com 80