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Re: spam blocking engine

Theo de Raadt <deraadt_(_at_)_cvs_(_dot_)_openbsd_(_dot_)_org> writes:

> What I am proposing is:
> 	- defer

The absolutely beautiful thing about it is that a positive lookup in
some real-time database of spammers or open relays *is* temporary.
The offending site could resolve its problems (a spamming customer or
an accidentally open relay), review its queue and delete spam
messages, inform the database administrators, re-run the queue and
have the remaining, legitimate messages *delivered*.

Not that this ever happens, but it shows how a 450-ish error code is
right when dealing with accidental blocks.