[AusNOG] IPv6 reverse DNS and Mail ...

[Robert Mibus]

Forgot to CC the list! :)

On Fri, May 24, 2013 at 11:27 AM, Robert Mibus <mibus at mibus.org> wrote:

> On Fri, May 24, 2013 at 6:23 AM, Mark Smith <markzzzsmith at yahoo.com.au>wrote:
>  ....
>
>> >My suggestion for dipping your toes in the water, are DNS servers.
>> Enabling IPv6 on a caching resolver lets it talk to IPv6-enabled
>> authoritative nameservers, and enabling at least some of your authoritative
>> nameservers means your clients should be able to fall back to an alternate
>> nameserver if they really have problems.
>> >
>>
>> Is this a manual fall back, or are you saying that some of the resolvers
>> in the clients list are IPv6 enabled and others aren't, and the resolver
>> timeout takes care of falling back if IPv6 lookups fail?
>>
>
> For resolvers, I'm not suggesting to replace the client<->resolver link as
> part of the first run, rather resolver<-internet->nameserver side.
>
> In my experience, retry/fallback mechanisms for DNS servers is more
> reliable than MTAs. Resolvers that have trouble with dual-stacked
> nameservers will have huge problems beyond your single site, since so many
> high-use NSes (roots etc) are already dual-stacked.
>
> In any event; as more providers support IPv6 mail, more MTAs will get
> fixed - and so each day it gets easier for everyone else to assume it'll
> "just work".
>
>
> --
> Robert Mibus <mibus at mibus.org>
> Tech by day, geek by night
>



-- 
Robert Mibus <mibus at mibus.org>
Tech by day, geek by night
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