Earlier, I was using a first generation iPad but now i have purchased an iPad 3. To get all data and settings of my old iPad, I performed an iCloud backup. My new iPad was working fine but while sending a message, an error message "sender address was rejected by the server" appeared before me. Sometimes, the screen shows similar message "recipient address was rejected by the server". I have wasted more than 4 days on Google in search of a working solution but failed. Do you have any fix?