[ih] Some Questions over IPv4 Ownership

[vint at google.com (Vint Cerf)]

i hope HTML5 instead :-)

v


On Fri, Oct 15, 2010 at 11:38 AM, Jack Haverty <jack at 3kitty.org> wrote:
> Yep, we're on the same page. ?Email portability exists now, if you just
> get a domain name per recipient. ?I suspect the DNS today couldn't
> handle that if too many people did it. ?Yes, yuch. ?But a similar
> mechanism must exist today inside the telephone world so it's proven
> possible.
>
> I think eventually we'll all have portable email addresses. ?Not too
> long either. ?Our addresses might just be our cell phone numbers. ?Why
> not...email and voicemail aren't all that different except at the very
> endpoints of the path.
>
> Naah, I'm not mad about the encoding in 733. ?But I'm happy that
> structured data encoding has finally caught on with XML. ?If those now
> ancient mail protocols got a facelift today, I bet they'd be based on
> XML.
>
> /Jack
>
>
> On Fri, 2010-10-15 at 07:40 -0400, Dave CROCKER wrote:
>>
>> On 10/15/2010 12:12 AM, Jack Haverty wrote:
>> > If "jack at 3kitty.org" is the example of forwarding you have in mind,
>> > that's not how it works. ?When I change providers, I move my 3kitty.org
>> > service from one provider to another,
>> ...
>> > I do have a bunch of xxx at 3kitty.org mailboxes, and they all must move
>> > together.
>>
>>
>> You are emulating a version of exactly the service I described towards the end
>> of my note, modulo the extra forwarding hop. It's key feature is that it is
>> independent of ISPs and it does not require their cooperation.
>>
>> However, as you note, all of the mailboxes must move together: ?granularity is
>> at the domain name level, not the mailbox level. ?To get per-user granularity,
>> you have to encode it in the domain name, given the way email routing works.
>>
>> The reason you can have "direct" routing, without having to go through a
>> forwarder is that you control the DNS MX record. ?In effect that means an MX
>> record per "customer", if not per "mailbox". ?Again, that's doable today and it
>> is done today. ?The challenge is scaling that model up to a mass market. ?In
>> effect, it means an MX per user (or maybe per family). ?Yuch.
>>
>> d/
>>
>> ps. ?I figure you're still unhappy we didn't adopt your encoding scheme when we
>> did RFC 733...
>>
>>
>>
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