Is there any stacktrace? The javax.net.debug property can be used to enable debug logging within JSSE.

Examples: -Djavax.net.debug=all or -Djavax.net.debug=ssl:handshake:verbose

Please note that this could produce large amount of logs so you may use it wisely.

On Wed, 16 Aug 2017 at 18:30, jeff01 <xfdeng@hotmail.com> wrote:
Hi,

What could be the root cause for this error in Aerogear UPS: Error sending
payload to APNs server: javax.net.ssl.SSLException: Received fatal alert:
internal_error ?

Certs were managed by another group in the company. How can I prove to them
that this is a certificate issue (not generated in Apple for push
correctly)? It failed when Apple does not like this .p12 cert. (it's freshly
generated so it should not expire)

TIA.



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