Debugging push notifications

Hi,

could you please help me read the following push notification error?

[2016/09/20 14:16:34 UTC] [EROR] Failed to send push device_id=ea008a4522cc4e1f032c74e56bdb141f180240928d1accafb282ea2b86917fe3, err=Post http://push-test.mattermost.com/api/v1/send_push: read tcp 10.0.8.41:34800->10.0.0.1:80: read: connection reset by peer

Do I read this right as DNS error that resolves test.mattermost.com as 10.0.0.1?
Is there a way I can send out test notifications from the shell and get the logged response to the std output?

Thanks, P.