Spam Email bounced replies

Please people, turn off bounce replies for Spam email and whilst we're at it rejection messages for unknown recipients (who are often random strings of characters generated by spammers/viruses).

Over a twelve hour period last night, the generic in-box for my domain was bombarded by over 18,000 spurious emails that had to be filtered. This equates to one message being delivered every 2.5 seconds.

Whilst I have a fairly sophisticated automatic system for binning them, it still ate up considerable bandwidth downloading them. The total file size was approximately 15 Megabytes.