Thread View: comp.mail.headers
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Started by John Chambers
Tue, 08 Sep 1992 03:34
How many headers exist?
Author: John Chambers
Date: Tue, 08 Sep 1992 03:34
Date: Tue, 08 Sep 1992 03:34
35 lines
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2149 bytes
Well, there are no articles here in this newsgroup, but it seems the
right place to ask, and maybe people will reply via email ...
What I've been doing is writing my own program that grovels through a
message's headers and tries to generate headers for a reply. I've got
it working pretty well in most cases, but there are quite a lot of
interesting and amusing headers that I've never seen and/or don't
quite know how to decipher. So I was wondering whether there might be
any sort of summary of what to expect from email headers.
There are of course some RFCs on this subject, but I don't have any
Internet access at the moment, and so I don't know how to go about
finding out the latest suggestions there. Even if I did, it's clear
that many implementors consider such "standards" to be merely
interesting guidelines, to be casually violated whenever they can come
up with a Better Idea. I'm more interested in what I can learn about
reality than about some committee's decrees.
Are there any useful summaries of existing email headers and the rules
(such as they may be) for how they are formatted? Or should I just
continue collecting headers and making my own guesses as to what they
might possibly mean?
I've occasionally seen messages from several mailers' daemons (e.g.,
the one on the snorkelwacker system) directed to my system's usenet
package, chiding it for the email paths it generates. Think of it: One
piece of software is chewing out another for violating the former's
rules. But perhaps I can do something about it in my own header
munger, if I can only learn more about what the rules might be.
--
All opinions Copyright (c) 1992 by John Chambers. Inquire for licensing at:
1-617-647-1813 ...!{bu.edu,harvard.edu,eddie.mit.edu,ruby.ora.com}!minya!jc
--
Pensu tutmonde; agu loke.
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