Bug#307768: exim4: check_local_user should reject system users?

[Marc Haber]

On Thu, May 05, 2005 at 10:48:06AM -0400, Marc Sherman wrote:
> Marc Haber wrote:
> >To me, this looks like an issue which could be solved in a dedicated
> >router which will fail e-mail addressed to system users. However,
> >there might be packages that need their user to be able to receive mail.
> 
> It seems to me that 300_exim4-config_real_local should be moved to 550 
> (or perhaps move the contents directly into 
> 600_exim4-config_userforward, at the start of the file).  The real-* 
> addresses only exist to serve the syntax-errors-to setting in the 
> userforward router, so that seems like the right thing to do to me.

Actually, the original idea of real-, which was introduced by the exim
maintainers long before I joined Debian, was to have a possibility to
bypass _all_ special routing techniques, which makes real- need to be
first in the router chain.

I am not sure whether having real- is still a good idea, whether it
should stay around, whether it should be mor restricted.

>   It means that real-* won't work for addresses aliased in the system
>   aliases file, but IMO that's a _good_ thing.

I bet there are some installations out there that rely on this behavior.

Greetings
Marc

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