As of today, MobileMe stopped using Sync Services, Apple’s own platform for data synchronization between your programs and supported devices. As we pointed out, this has affected recently released Office for Mac 2011 Service Pack 1 which relied on the platform to sync Outlook calendar with your iPhone. As a result, Mac people must physically connect their device and sync via iTunes, which kills the purpose of push calendar in the first place.
Alternatively, you can change your email client and go through the email server supported by the Mail app. Sounds like too much hassle just to keep your Outlook calendar and iOS gadget in perfect sync.There’s a workaround that lets you wirelessly sync Outlook calendar with your iOS device via Windows – on your Mac.