[dns-operations] IPv6 PTR best practice

Chris Adams cma at cmadams.net
Wed May 9 13:37:48 UTC 2018

Once upon a time, John Kristoff <jtk at depaul.edu> said:
> On Wed, 9 May 2018 02:56:31 +0000
> John Levine <johnl at taugh.com> wrote:
> > This has come up at M3AAWG a few times.  The consensus seems to be
> > that hosts with static addresses should have rDNS to match the forward
> > DNS but there is no reason to try to paper the whole rDNS with
> Some systems force you to have a PTR for a v6 address or they'll
> consider your mail host to be a source of spam.  Google does this or at
> least did last I checked.

That's for servers, which is covered under the "hosts with static
addresses".  There is no such requirement for end users submitting

Chris Adams <cma at cmadams.net>

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