I have same problem with my domain leavesongs.com(hosting by DNSPod). Dnspod is china’s biggest DNS hosting, so sad…
{u'status': u'invalid', u'validationRecord': [{u'url': u'http://www.leavesongs.com/.well-known/acme-challenge/rrDq5Ihs4vQqxk7NuMnBKD0tnCVGFLXCvf2tRltlRMg', u'hostname': u'www.leavesongs.com', u'addressUsed': u'133.130.100.201', u'port': u'80', u'addressesResolved': [u'133.130.100.201']}], u'keyAuthorization': u'rrDq5Ihs4vQqxk7NuMnBKD0tnCVGFLXCvf2tRltlRMg.jmTkjEFt3yv0PIqIkjlYn4A1iGHfWTl9MV5bqnKsK8M', u'uri': u'https://acme-v01.api.letsencrypt.org/acme/challenge/2GS--3sPSORjtzuKd5y_OjqXWIxBOuCW4DKZQ0yEojY/1571552', u'token': u'rrDq5Ihs4vQqxk7NuMnBKD0tnCVGFLXCvf2tRltlRMg', u'error': {u'type': u'urn:acme:error:connection', u'detail': u'DNS query timed out'}, u'type': u'http-01'}