ietf-asrg
[Top] [All Lists]

Re: [Asrg] Turing Test ...

2003-04-06 13:57:41
On 06 Apr 2003 10:35:56 -0500 
wayne  <wayne(_at_)midwestcs(_dot_)com> wrote:
In <20030402200336(_dot_)A8484(_at_)zardoc(_dot_)esmtp(_dot_)org> Claus 
Assmann
<ca+asrg(_at_)esmtp(_dot_)org> writes:

Maybe I should make it more clear: you send a question to
sendmail.org, you can get an answer from esmtp.org, some university,
some Unix vendor, some other domain...
 
Hence your original mail must already include a "token" which allows
the reply to go through without depending on the sender address
(domain).

Hey, I have an idea!

You want to identify the message, so this "token" should be placed in
a header called, uh, how about "Message-ID:".  In order to make this
message-id work, you would want to make sure that it is unique to
every message that you send.

Filtering returning bounces based on Message-ID requires that the MX
keep a DB of known-valid IDs.  This is a non-trivial expense.  There are
other problems related to secondary MXes, load sharing, architectures
with multiple ingress and egress paths, disjoint arrangements (satellite
operations which handle their own deliveries but mail is routed
centrally) etc.

-- 
J C Lawrence                
---------(*)                Satan, oscillate my metallic sonatas. 
claw(_at_)kanga(_dot_)nu               He lived as a devil, eh?           
http://www.kanga.nu/~claw/  Evil is a name of a foeman, as I live.
_______________________________________________
Asrg mailing list
Asrg(_at_)ietf(_dot_)org
https://www1.ietf.org/mailman/listinfo/asrg