Re: why IPv6 isn't ready for prime time, SMTP edition

[Larry Sheldon <LarrySheldon () cox net>]

On 3/29/2014 12:59 PM, Jimmy Hess wrote:

> *Postage schemes as proposed with end users email clients 'attaching
> postage' simply not workable  Not in IPv4.  Not in IPv6.   Not in IPng
>   Not in any conceivable future version of IP.

And I insist that we are all wasting our time trying to make SMTP and 
its supporting protocols (and their kin under IPX/SPC, Sperrylink, UUCP, 
et alia) are not at the transport layer and nothing at the transport 
layer is responsible for nor rich with solutions for their problems.

IF the overriding problem is due to an inability to identify and 
authenticate the identification of  the sender, then let us work on 
establishing a protocol for identifying the sender and authenticating 
the identification  of the sender and permitting the receiver to accept 
or deny acceptance of traffic by reference to that identification.


--
Requiescas in pace o email           Two identifying characteristics
                                        of System Administrators:
Ex turpi causa non oritur actio      Infallibility, and the ability to
                                        learn from their mistakes.
                                          (Adapted from Stephen Pinker)