Re: Virtual hosts

At 10:59 AM +0900 4/12/07, Stephen J. Turnbull quoted Mark
Sapiro:

>   > I have added FAQ 6.22
>   > <http://www.python.org/cgi-bin/faqw-
mm.py?req=show&file=faq06.022.htp>.
>   > Look it over and comment/fix as appropriate.
>
>  Basic format, especially the length, looks good to
me.

Agreed.

>                                                        
 Two
>  suggestions: my feeling is that the first line should
mention the
>  *places* where replacement has been observed (envelope
address, RFC
>  2822 addresses, whatever).

It may be my anti-histamine-fogged brain, but I'm not quite
sure I 
understand what you mean.  Could you clarify?

>  Second, while I'm not real keen on the idea that the
Mailman faq
>  should contain a large email vocabulary list, do we
have a single
>  "jargon faq" that gives pointers to RFCs
that are frequently
>  referenced and also mail FAQs That Are Maintained By
Somebody (for
>  values of Somebody != mailman developers)?

I'm not aware of anything we're keeping in this area with
regard to 
Mailman.  We could link to some of the FAQs and RFCs on
faqs.org, but 
there are so many different FAQs and RFCs that I fear we
would 
seriously scare the bejeebies out of anyone who actually
read such an 
entry.

>                                              It would
be cool if
>  generic mail jargon (eg, "envelope address")
could be linked to that
>  FAQ.

There is always the Jargon File.  ;)

>  Obviously the second comment is a generic, while I'm
thinking of it,
>  kind of thing.  I'll try to get back to it myself,
later, but I won't
>  cry if somebody beats me to it.<wink>

Please, feel free to take a whack at it.

-- 
Brad Knowles <bradshub-internet.org>, Consultant &
Author
LinkedIn Profile: <http://tinyurl.com/y8kp
xu>
Slides from Invited Talks: <http://tinyurl.com/tj6q4
>
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Brad Knowles writes:

 > >                                                  
       Two
 > >  suggestions: my feeling is that the first line
should mention the
 > >  *places* where replacement has been observed
(envelope address, RFC
 > >  2822 addresses, whatever).
 > 
 > It may be my anti-histamine-fogged brain, but I'm not
quite sure I 
 > understand what you mean.  Could you clarify?

As I read the thread, I saw no examples of RFC 2822 headers
being
munged, but I did see lots of discussion of SMTP commands
like ELHO,
MAIL, and RCPT.  RFC 1123 requires that addresses in MAIL
and RCPT
commands be canonicalized, but says nothing about the RFC
2822 headers
that I can see.  So I've been thinking in terms of envelope
addresses,
which often are visible to users in various ways.  Are the
message's
headers actually being rewritten?  If so, which ones?

And on which host?  Ie, is it that joeexample.com composes a
message
"To: ninevirtual.dom", and the MTA at
example.com is rewriting that
to "To: ninehosting-service.dom"?  If so, it's
purely a DNS issue and
neither Mailman nor Mailman's MTA can do anything about it. 
Or is the
MTA at hosting-service.dom rewriting it before
redistributing?  Or
what?

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