@wkw911
strange, did you first try z-push ? Because i first tried sogo-activesync and i removed it (purge) and after installation of z-push i can´t connect my phone with the settings i used for sogo-activesync. reconfiguring doesn´t help. I did exactly the same as written in the wiki, but i remember, that for z-push a config file exists, but i didn´t modify any file by hand.
Maybe here is another problem when changing moduls of zentyal.
I used a local ip for exchange server adresse, because my system is using only one nic behind a local fritzbox cablerouter. for mobile access i wanted to use openvpn, so i don´t need to open any ports on my router.