From: Victor Duchovni (Victor.DuchovniMorganStanley.com)
Date: Thu Oct 07 2004 - 10:49:08 CDT

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On Thu, Oct 07, 2004 at 05:06:04PM +0200, Matthias Andree wrote:

> 1. Postfix behaves inconsistently:
>
> a. smtpd looks at NIS to figure "yes, I have that user"

The administrator should have used:

        proxy:unix:passwd.byname

instead of proxy:nis:passwd.byname. The inconsistency is in the
configuration, not in the software.

> b. local looks at getpwnam() to figure "no such user".

local(8) needs a trusted source of uid/gid/home directory, the system
password database is the only source for this information. An administrator
who chooses to base local_recipient_maps on some other data source needs
to understand the consequences of his actions.

> This creates all sorts of bugs that Postfix aimed to fix, for
> instance, delayed bounces, bogus bounces, confusion.
>
> I cannot imagine how you, who usually aims for reliability, would
> accept that Postfix components disagree about whether a-user exists
> or not.
>

The high moral tone is not productive.

--
        Viktor.

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