[91756] in North American Network Operators' Group
Re: SORBS Contact
daemon@ATHENA.MIT.EDU (Ken Simpson)
Fri Aug 11 12:14:36 2006
Date: Fri, 11 Aug 2006 09:09:33 -0700
From: Ken Simpson <ksimpson@mailchannels.com>
To: Nachman Yaakov Ziskind <awacs@ziskind.us>
Cc: nanog@nanog.org
Reply-To: Ken Simpson <ksimpson@mailchannels.com>
In-Reply-To: <20060811115637.E1574@egps.egps.com>
Errors-To: owner-nanog@merit.edu
> 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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