Re: SORBS Contact

[Ken Simpson <ksimpson () mailchannels com>]

> Weighing in with an opinion, as bad as blacklists *may be*, at least
> they let the sender know something's up. Not in an artful way, to be
> sure, but they give some notice. The sender can do _something_,
> including dropping his association with the recipient b/c it's not worth
> his time and trouble. Blackholing email because you think it's spam, OTOH, 
> is pure evil.

Host type can only be used as a relatively small weighting factor
toward blocking connections. However in the absence of any other
reputation data on a particular IP, it's a safe way to trigger
throttling or rate limiting.

IMHO receivers have a right to filter traffic in any way that reduces
abuse while serving the needs of their end users. There is a lot of
pressure from end users and legitimate email senders to ensure that
whatever blocking strategy is in use ensures that the good stuff is
not blocked.

Regards,
Ken

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