Calendar meeting attachment in Outlook 2013.

Dear support team,

I already tested the Zxmobile on Zimbra open source 8.6. It's seem to be working fine.

But when i use outlook to sync calendar via Exchange active sync. It's OK but when i would like to organize a meeting with outlook calendar. I was not able to attach the file into the meeting.

Please help to tell me if i miss any config.

Thank you for your support.

Nhan,