So, as a general rule, we intend to BOUNCE anything that gets identified as spam via the blacklists and the phase filtering. Here's the question about the theory:
Spammer sends spam to invaliduser(at)domain.com. iMail bounces it back to the sender... -- theoretically confirming that invaliduser(at)domain.com is a valid user --- Thereby inviting more spam to the invaliduser(at) account...
... which would eventually eat up all the bandwidth in the universe and it will start raining frogs.
I've heard that this type of "unintentional confirmation of a valid account" is an urban myth - but who knows?
Anyone have any thoughts on how to best handle spam in order to create the best possible client-experience?
Matthew
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