We stopped being able to connect to the feedback.sandbox.push.apple.com about two days ago right in the middle of testing. I checked the certificate and it is valid. I also ran the openssl troubleshooting commands... and it all appeared ok. But we also can NOT doing any testing or work against the sandbox APNS. We are getting the following error about a malformed message response when we try and create the SSLStream connection. I have been scratching my head for a day now... thinking it was something on our end... so would really appreciate a response if others are able to test and connect to the sandbox APNS using PushSharp current version 2.1.2 ??
A call to SSPI failed, see Inner exception" Inner Exception -> "The message received was unexpected or badly formatted."