I am using RoadSync in my phone in Portugal, and everytime I send emails using Portuguese characters (UTF8), via phone, they are replaced by "?". RoadSync supports UTF-8, so I am guessing Zimbra has some issues on this.

Does anyone have a clue on a solution.

I am using :
Zimbra/OS Version: Release 6.0.2_GA_1912.UBUNTU8_64 UBUNTU8_64 NETWORK edition. Zimbra Components: Zimbra Server, Network Edition, Zimbra Web-Client, Zimbra MobileSync, Outlook Connector