why IPv6 isn't ready for prime time, SMTP edition
bruns at 2mbit.com
Tue Mar 25 22:06:54 UTC 2014
On 3/25/14, 3:33 PM, Laszlo Hanyecz wrote:
> The usefulness of reverse DNS in IPv6 is dubious. Maybe the idea is
> to cause enough pain that eventually you fold and get them to host
> your email too.
Well, like I said, there is nothing wrong with using rdns as part of a
score in how legit a message is. Knock off a point or two in
Spamassassin, add a few points back because there is SPF records, and
another one or two for DKIM...
Google is obviously doing some intelligent filtering on their end to
handle incoming spam - why take such a drastic move against rdns when
you already do heuristics that can factor it in without risking losing
I just finished moving two customers from Google hosted mail to Office
365 hosted Exchange. Even with all the odd quirks and issues that 365
has from time to time, I'm still getting better feedback from my
customers. So... no, I'd sooner shut down my mail services then go with
Google mail hosting for my primary e-mail address.
But, that's just my opinion.
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