Mails bounced when Quota limit reached

[internezzo]

Hi

We've seen that incoming mails for mailboxes that have reached their quota level will be bounced instead of rejected. Is it possible to do the check before accepting the message?

If possible or not, it would be great if the error message could be changed to something more meaningful. Currently it's just "Message can't be delivered." which implies that something with the server is wrong while it's just a full mailbox...

Any hint is appreciated

Cheers,
Mario