Problem with Outlook exchange Sony XperiaZ

Hi Guys, I know you have probably dealt with an issue like this but I would still appreciate your help. My Sony EXperia Z running on Android 4.2.2 cannot sync my exchange emails. The Calendar in the same account however has been successfully linked and it updates as it should. The problem is with the incoming and outbound emails. When It tries to sync, it says "connection error" Please help. I am definite all setting are ok and I have tried to remove and resset the account but nothing.