I'm currently implementing Office 365 - Hybrid Exchange config. I've piloted 25 mailboxes to Exchange Online, working fine.
Marketing department need to make use of Yammer and they're not yet migrated to O365. I'm using DirSync with password to Office365, which means all my AD user objects are there. I'm trying to to do the Yammer DirSync of a specific OU and the "globalsettings.config" file does not retain my settings. the reason why I'm trying to do a specific OU, is because I don't want to sync all my users in case they all get the Welcome to yammer email. Anybody with Office 365 and Yammer experience, highly appreciated.