Please start by reading the documentaton - such as it is - provided.
From the z-push download, in the root directory you will find a file named INSTALL
In there is a troubleshooting section. It contains the instructions
Code:
If you have other synchronisation problems, you can create the file
'debug.txt' in the root directory of z-push, which should also be
world-writable:
touch /var/www/z-push/debug.txt
chmod 777 /var/www/z-push/debug.txt
The debug.txt file will then collect debug information from your
synchronisation.
and in the notes at the top of the zimbra.php file
Code:
*
* === To Enable Debug Information ===
* This will output the Folder Lists from Setup() and the SOAP Requests/Responses
* define('ZIMBRA_DEBUG',true);
*
* === To Disable Debug Information ===
* define('ZIMBRA_DEBUG',false);
* Also not included in the z-push information above - if you want to log the incoming/outgoing messages edit the file wbxml.php in the root of z-push, and change the setting define('wbxml_debug',false); to be true