A lot of users going on holiday create autoreply but they do it as allways in the laziest way possible just putting the minimum information.
With this, autoreply do not have any delay between replies. So the question would be : Is it possible to have a domain/server minimum or just default delay time so that lazy users have this protection against autoreply loops built in ?
I think this would be a great idea to put a default here. This could be a domain default, a server wide one or even be a limit of the account plan.