Apple has informed customers that Push email service has been suspended for iCloud and MobileMe customers in Germany due to successful patent litigation by Motorola Mobility.



From MacRumors:

Affected customers will still receive iCloud and MobileMe email, but new messages will be downloaded to their devices when the Mail app is opened, or when their device periodically fetches new messages as configured in iOS Settings. Push email service on desktop computers, laptop computers, and the web is unaffected, as is service from other providers such as Microsoft Exchange ActiveSync. Mail services are otherwise available for both iCloud and MobileMe, but mail must be fetched manually or at a certain interval of time.

  Apple Suspends iCloud/MobileMe Push Email in Germany Due to Lawsuit