openssl s_client -tls1_2 -connect api.sandbox.push.apple.com:2197 -cert mdm.pem -certform PEM -key privatekey.pem -keyform PEM 
...
...
...
Start Time:1739846652
Timeout
:7200(sec)
Verify return code:0(ok)
Extended master secret:yes
Ð@@.{"reason" :"BadCertificateEnvironment"}closed