As a developer, I’ve tested OSX 10.10 (Yosemite) and iOS 8 for a long time. There was a strange issue after I reset my OSX:
When I try to make a call from OSX, the calling box will be closed after 10 sec without any information in OSX 10.10 DP4. In DP5, it will say that “Your iPhone is not configu…”. Also, no SMS can be sent from OSX either. But when typing message on iOS, there will be an icon displayed on the left side of Dock in OSX.
Finally, I know the reason.
We know that the account name is one email address. And you can add more email addresses as alias. The problem of the current version of iOS 8 and OSX 10.10 is: if you used the email address for Facetime and iMessage is different from the one used in iCloud for OSX, no matter these email addresses are linked to the same iCloud account or not, the handoff function won’t work, just like the situation I mentioned above.
Before Apple fix this bug, we have to use the same email address for these place.
This issue is submitted to Apple.