Comment BATV (Score 2, Informative) 119
Take a look at Bounce Address Tag Validation (BATV). http://mipassoc.org/batv/index.html There even is an implementation for EXIM. This drops spam bounces like you wouldn't believe.
How long does it take a DEC field service engineer to change a lightbulb? It depends on how many bad ones he brought with him.
