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

[Marc Sherman]

Marc Haber wrote:
> 
> I think that the current behavior is fine for the default
> configuration in sarge.

Oh, yeah, of course, I don't think this needs to change for Sarge.

> For post-sarge, I am open to arguments, but am not yet convinced.

Ok, that's fine.  But if you agreed with my goal, what do you think of 
my execution?

- Marc