I have had my ms exchange server account synced on my phone for about 8 months and was able to send and receive email with no problems. Over the last month I've had several issues where email appears to be sent from the phone but it is never received nor does it show in my sent mail file. I fixed it a couple of times by rebooting but that isn't working anymore. My gmail accounts still send and receive with no issues so it has to be related to the exchange server and the phone. Anyone have a fix or any idea as to why this is occuring? thanks.