We have configured the push notification service (Server-provider) to communicate with APNS with hostname: api.sandbox.push.apple.com and Port: 443. APNS request is going successfully but from APNS to device (iPhone 6S ) not coming.
We have whitelisted the above port and other ports also(2195, 2197). but. still not able to receive the notification.
We have also cross verified with the old gateway.sandbox.push.apple.com:2195 and it's working fine but with new api.sandbox.push.apple.com:443, not working.
Could someone from Apple Community help us to get resolved this issue?
Thanks in advance!!