Sad Clouds via Postfix-users:
> On Wed, 4 Dec 2024 08:06:52 -0500 (EST)
> Wietse Venema via Postfix-users <postfix-users@postfix.org> wrote:
>
> > There are diagrams in https://www.postfix.org/OVERVIEW.html that
> > show how the various programs connect to each other.
>
> Hello, I've seen those and I'm using them as a reference. However some
> of them raise questions. For example, the diagram for verify(8) server
> shows: smtpd->verify->qmgr, however between smtpd(8) and qmgr(8), other
> diagrams show anvil(8) and cleanup(8) servers. So not clear exactly
> where verify(8) server sits in that pipeline.
>
> Or maybe smtpd->verify->qmgr is a completely separate pipeline which
> goes directly to qmgr(8) and does not use cleanup(8)? I'm trying to
> create a single diagram that clears up these ambiguities.
The drawings are simplifications. Many programs invoke cleanup
behind the scenes, but they tell cleanup to disable features such
as milters or header/body_checks. So that is not the same cleanup
service as used for the "normal" mesage flow, and that's why it is
eliminated from the diagrams.
Wietse
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