>>>>> "Kevin" == Kevin Darcy <[EMAIL PROTECTED]> writes:
>> Reverse DNS does uses, even for IPv6. They are not necessarily
>> related to authentication. When reverse lookups of the hosts
>> sending me email don't work, this is almost always an
>> indication of spam.
Kevin> Which is just another way of saying you're using it as a
Kevin> (very porous) form of spammer-versus-not-spammer
Kevin> authentication.
Indeed. But it's an effective first line of defence. It's not the
only one.
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