I'm wondering if anyone else is having this problem? For some reason, suddenly my gmail account set up on exchange isn't able to send messages out (but still will receive them). I get a message stating "Cannot send Mail: an error occured while delivering this message". I've tried deleting the account and re-adding it. I don't seem to have this issue with another gmail account set up just as gmail. Has anyone else encountered this? Any idea why it's happening or how to fix it?