Re: IM2000 RNASP -- identifying message stores to recipients

>James Craig Burley <[email protected]> wrote:
>> >It
>> >would be easy to publish a list of such domain names to avoid (known spam
>> >operations, etc).
>> 
>> Really?  I worry about this (for both IM2000 *and* SMTP).
>
>You need to think about what happens if a message store changes IP
>address (which obviously would happen sometimes). With DNS this is
>solvable, with IP-address-based stores it might become tricky.

*I* don't need to think about it; *anyone* publishing their IP address
in contexts such as message-store identifiers in IM2000 message
notifications needs to consider whether that address will survive the
lifetime of such publications (likely to be no more than a few weeks
anyway).

Besides, it's almost easier for certain sites to "lose" a domain name
(didn't that happen to microsoft.com a few years ago?) than to lose an
IP address.

So I think (especially having just read JdBP's answer to the same
original question) that it's fine for the protocol to leave the
decision (as to whether to publish an IP address or a domain name) up
to the admin of the message store.

Having a dynamic IP address myself, the decision would be obvious: go
with whatever domain name I'll be holding onto the longest (based on
what I've already paid for it).

-- 
James Craig Burley
Software Craftsperson
<http://www.jcb-sc.com>