Exchange iApp 1.3.0 and disconnection of Entourage 2008 EWS

Hello,   I use the Exchange iapp 1.3.0 on LTM BIG-IP 11.5.1 Build 2.0.121 Hotfix HF2. I don't use APM. My environment Exchange is 2010 SP3 with 2 servers on DAG configuration (multi-role CAS/HUB/M...