Redmine

We are using Redmine time logging function extensively but we are trying to figure out a way to disable user's ability to log time into an issue to a future date. Ideally, we would like to only allow user log time on that same day, and not allow past logging as well.

Is there a way to maybe disable calendar dates when logging time? So a user can only select "todays date" when logging time? Or some other way of controlling this? If there is absolutely no way to restrict the time logging, is there a way to at least notify administrator when someone logs time for a day other than "today" ?

Thanks!