Using the voting buttons in Outlook 2007, apparently users can submit votes as many times as they like. (I have just now verified this behaviour.) Is there a way to restrict the uses to just one vote each? I've found a script online which claims to do this, but there's no way I can use a script like that across our company. I'm hoping it's just a configuration setting either in the outbound email, or in the user's Outlook client.