I upgraded to IOS 7 on iphone 5 and ipad. Had some problems with the mail so deleted my hotmail account on both devices and set them up again with "no limit" in sync. It start to download messages but when it reaches May 06 no more mails are downloaded and both devices stop to receive new mail. If switching back to 1 month of sync it works normally, but I need older mails as well. Any ideas?