On Mon, Aug 10, 2020 at 04:44:34PM -0400, cfs_post...@insec.lofcom.com wrote:

> Viktor Dukhovni <postfix-us...@dukhovni.org> wrote ..
> 
> > You're indeed falling into the very trap I tried to steer you away
> > from, that is, describing problems only in free-from prose, rather
> > than clearly stated data (logs, configs, ...).
> 
>    No, I'm really not, and I'm a little insulted that you would accuse
>    me of such. For the two questions I asked, logs are useless since I
>    am asking generalized questions about the way postfix "thinks." I
>    don't want to talk specifics, I want to talk generalizations. I
>    only provided enough information to show where my general questions
>    came from, not to define the questions themselves. Feel free to
>    think of the questions I asked more philosophically than
>    transactionally, since as I mentioned the specific problems I had
>    in using the virtusertable with postfix have been understood and
>    fixed (my detailing those with postconf output and logs would be a
>    complete waste of your time, so I didn't - but it was writing them
>    up to post here that allowed me to see the answers, so thank you
>    for that).

I am sorry that's the way you ended up feeling, but your first original
remains under-specified.  Wietse's response re the internal form of
addresses, is correct, but quite likely entirely misleading, depending
on what you meant to ask, which remains rather unclear.

- The local(8) delivery agent in Postfix delivers email to bare address
  localparts ignoring any domain part, and strips address extensions.

- The virtual(8) delivery agent treats the entire address as the mailbox
  name, possibly stripping the address extension if no matchi is found
  for that.

- Other delivery agents (via pipe(8)) can do whatever they see fit with
  any part of the address.

Or perhaps you were asking about email coming in via SMTP, and what
address formats are expected there?

Without *context* your question was and remains much too vague.  If your
question is broad enough, the answer is "read all the documentation" and
perhaps even the source code, because the question boils down to
something with roughly the specificity of "tell me, how does Postfix
work"?

-- 
    Viktor.

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