Function imap_open its not responding

[stsights]

HI.
I use all the time the function imap_open in my php script but since like one week my script doest load any more.
I connect to my gmail account to extract my emails and I use the following code.
$mbox = imap_open ("{imap.gmail.com:993/imap/ssl/novalidate-cert}INBOX", $mail , $password);
But my script doest not load any more could you help me if I am still able to use this function or if is it a trouble with the server.
Thanks

 

[Christopher]

Moved to level two support
The firewall is probably blocking it.

 

[stsights]

Is any one could help me with that firewall??

 

[Fedlerner]

The firewall blocks port: 993.
I'm sorry but we can't enable it for the free accounts.

 

[stsights]

Could I use the port 995?? Or what ports I am able to use to chech my email with imap funcion of php?