On 03/25/2014 11:18 PM, John Levine wrote:
3. Arguing about IPv6 in the context of requirements upon SMTP connections is
playing that uncomfortable game with
one�s own combat boots. And not particularly productive.
If you can figure out how to do effective spam filtering without
looking at the IP addresses from which mail arrives, you will be in a
position to make a whole lot of money.
But, as always, I'm not holding my breath.
R's,
John
PS: Note the word "effective".
You look at the IP, and verify forward and reverse DNS.
IPv6 doesn't make this any harder a problem than IPv4, it just means
that we're going to *have* to reject mail that comes in from IPv6
addresses that don't have clean DNS.
--
Daniel Taylor VP Operations Vocal Laboratories, Inc.
dtay...@vocalabs.com http://www.vocalabs.com/ (612)235-5711
