Re: IM2000 RNASP -- identifying message stores to recipients

CC> If this is a domain name, I presume the intent is to have the
CC> recipient perform an SRV DNS lookup to obtain an address/port
CC> combination -- that's good.  

The actual lookup mechanism is described in
<URL:http://homepages.tesco.net./~J.deBoynePollard/Proposals/IM2000/Architecture/recipient-mua.html>
in the section on locating message stores on Internet.  (I should 
probably add some section anchors to that page.)

CC> I don't see the need for this.  What was the intent here?

There are two conflicting usage scenarios.  There's the "All _real_ message
store owners will have the ability to create the relevant DNS resource record 
sets." scenario on the one hand, and on the other hand there are the "I don't 
want to be forced to own a domain name in order to run a message store.", the
"My message store is entirely private to my small organisation, so I don't 
need all of this extra mechanism.", and the "My DNS hosting service/DNS 
software/network administrator won't let me set up 'SRV' resource records." 
scenarios.

I strove to accommodate both camps, incorporating a reasonable bias towards
the use of domain names whilst still permitting their avoidance if one 
_really_ wanted it.