Notes: This is a maintenance release for Z-Push 1.5. It is recommended for Zarafa systems with a hundred or more Z-Push users and/or having a high load caused by apache. Also the ping interval was increased to 30 seconds by default. Changes: General - changed: Increase ping timeout by default (Mantis #536) - fixed: New mail from android produces @localhost error in spooler and postfix logs. Do not parse an email address if it is set but empty. (Mantis #554) - fixed: break while in PING case unknown tags are sent (Mantis #538) Zarafa/ICS - partly undone rev 775, as a conflict detection for read flags is not really necessary and may result in timeouts (Mantis #537) - fixed: PHP Warning: Call-time pass-by-reference has been deprecated. It was deprecated in PHP 5.3 (Mantis #552)