Re: ADMD (was: Re: I-D ACTION:draft-crocker-email-arch-06.txt)

On Tue, 13 Mar 2007 11:35:05 PDT, David MacQuigg said:

> But even if there were a chain of MTAs between you and Songbird, and they 
> were clearly labeled with different domain names, I'm still not seeing the 
> utility of having outsiders treat Songbird as a separate ADMD.
It's not just outsiders - sometimes the distinction matters to people
on the *inside*.  For example, understanding that Songbird is one ADMD
and the sender is another ADMD makes it easier to understand how and why
this happened:

> I see that songbird.com has an SPF record authorizing one server at 
> 208.184.79.7, not the one that sent your message!!
Exactly.  And in fact, you then go on to say it yourself:

>                                          Songbird is your agent, and 
> you have a choice of many such agents who don't have a problem publishing a 
> correct list of their authorized transmitters.
Therefor, Songbird as an agent is an ADMD distinct from Dave Crocker's ADMD,
since there is *no* way for Dave's ADMD to have a choice of many such values of
"itself".

Remember - Dave is *also* "outside" the Songbird ADMD, even if he's on
"the other side" of it from you.

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