APNS ssl://gateway.sandbox.push.apple.com:2195 connection fails-open source projects anachronistic/apns

i try to make a push-notification server. I get connection to ssl://gateway.sandbox.push.apple.com:2195 with telnet.

telnet gateway.sandbox.push.apple.com 2195
Trying 17.172.232.229...
Connected to gateway.sandbox.push-apple.com.akadns.net.
Escape character is '^]'.

my *.pem is ok (I use it on another server). I use the SAME project on an other Server and it works there but the clone on an other Server doesn’t.

I get these Errors:

Warning: stream_socket_client() [function.stream-socket-client]: SSL operation failed with code 1. OpenSSL Error messages: error:14094415:SSL routines:SSL3_READ_BYTES:sslv3 alert certificate expired in /var/www/try.php on line 69

Warning: stream_socket_client() [function.stream-socket-client]: Failed to enable crypto in /var/www/try.php on line 69

Warning: stream_socket_client() [function.stream-socket-client]: unable to connect to ssl://gateway.sandbox.push.apple.com:2195 (Unknown error) in /var/www/try.php on line 69

The certificate is NOT expired, it works on the other Server and the date is the same.

Does someone has a clue what the mistake could be?

I work on

Apache/2.2.9 (Debian) PHP/5.2.17-0.dotdeb.0 with Suhosin-Patch mod_ssl/2.2.9 OpenSSL/0.9.8g

EDIT: It seems, that using the same certificate on different servers doesn’t work. Maybe this is blocked by Apples servers.