在php中使用APN时出错

正在尝试使用APNS-PHP生成推送通知。。不断地得到这些错误

Tue, 06 Mar 2012 08:53:40 -0700 ApnsPHP[12396]: 
INFO: Trying ssl://gateway.sandbox.push.apple.com:2195... 
Tue, 06 Mar 2012 08:54:22 -0700 ApnsPHP[12396]: ERROR: Unable to connect to 'ssl://gateway.sandbox.push.apple.com:2195': Connection timed out (110)
 Tue, 06 Mar 2012 08:54:22 -0700 ApnsPHP[12396]: INFO: Retry to connect (1/3)... 
Tue, 06 Mar 2012 08:54:23 -0700 ApnsPHP[12396]: INFO: Trying ssl://gateway.sandbox.push.apple.com:2195... 
Tue, 06 Mar 2012 08:55:06 -0700 ApnsPHP[12396]: ERROR: Unable to connect to 'ssl://gateway.sandbox.push.apple.com:2195': Connection timed out (110)
 Tue, 06 Mar 2012 08:55:06 -0700 ApnsPHP[12396]: INFO: Retry to connect (2/3)... Tue, 06 Mar 2012 08:55:07 -0700 ApnsPHP[12396]: INFO: Trying ssl://gateway.sandbox.push.apple.com:2195...
 Tue, 06 Mar 2012 08:55:49 -0700 ApnsPHP[12396]: ERROR: Unable to connect to 'ssl://gateway.sandbox.push.apple.com:2195': Connection timed out (110) Tue, 06 Mar 2012 08:55:49 -0700 ApnsPHP[12396]: INFO: Retry to connect (3/3)... 
Tue, 06 Mar 2012 08:55:50 -0700 ApnsPHP[12396]: INFO: Trying ssl://gateway.sandbox.push.apple.com:2195... 

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有人有这样的东西吗？谢谢

可能端口2195被阻止，或者证书是问题所在。

已检查，它们未被阻止，证书正常