Jens, not sure if this answers you correctly or not, as I am not very Exchange-savvy

Most users are set to use the defaults, but there are other users that are not, for various business reasons, as I understand it. Wouldn't site-wide prevent me from providing the custom limits for those users? She doesn't want everyone to be set the same; it's just that the ones that have custom limits should never be prevented from receiving mail.

Please advise if I'm not on traget here though. Thanks!