Have 3 zimbra open source edition servers installed servicing 14 email domains. It wokrs great!!! i cant be happier with the choice we made to switch off exchange. However our CEO and CFO just threw a curveball my way. They would like activesyn and blackbery support for just a small group of about 10 users. I know this is available with the network edition, but i dont want to upgrade the whole server, just want to apply the features to the few users that cry loud/long enough to get it.