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Re: Understanding response protocols

2004-09-09 06:06:31


On 9/8/2004 10:17 PM, D. J. Bernstein wrote:

Eric A. Hall writes:

One thing I've noodled on is a "reply-to-list" option

Why? Do you think the user often wants to say ``I'd like my response to
be visible to everyone who read the original message---but not the
sender if he's a non-subscriber to this list, and not the subscribers of
other lists if this message was crossposted''?

It should be clear from what I wrote in the message that you replied to
what I'm thinking about here, and that's not it.

Even for single-list messages, I can't see whether ``reply to list'' is
doing what I want unless I have extra information from the sender---

Right. In theory you can do this with a single list by looking for a
List-* header and matching it with an address in the TO header, but if
there are any other addresses in the TO/CC blocks (especially any other
list addresses for which there are no list-* header) it fails completely.
So what you really need is a way to overload the TO/CC blocks with
additional information, or really what would be better would be to define
new recipient header such as List or Group or whatnot, and which you could
match with more decisively, and which would survive multiple mailing lists
that pass through multiple servers. See the original message again; most
of this stuff is easier to think about in terms of "later".

-- 
Eric A. Hall                                        http://www.ehsco.com/
Internet Core Protocols          http://www.oreilly.com/catalog/coreprot/