Bug#439983: exim4: /var/www/Maildir?

[Olaf van der Spek]

On 8/30/07, Andreas Metzler <ametzler at downhill.at.eu.org> wrote:
> On 2007-08-29 Olaf van der Spek <olafvdspek at gmail.com> wrote:
> > Package: exim4
> > Version: 4.63-17
> > Severity: normal
>
> > Hi,
>
> > Exim4 created /var/www/Maildir, I don't think this is desirable.
> > /var/www was created by Lighttpd.
> [...]
>
> Hello,
> There is not really a completely proper fix for that. This happened
> because you received mail for www-data at localhost. www-data has
> /var/www as homedirectory and the mail is not redirected somewhere
> else in /etc/aliases.
>
> Exim could be configured to generally not deliver to system accounts
> and indeed the Debian packages are prepared for that since 4.67-3.
> Setting
> FIRST_USER_ACCOUNT_UID = 1000
> would stop exim from accepting (an delivering) mail to any system
> accounts from remote hosts unless they are redirected by /etc/aliases
> (or a special router).[1]
>
> However discussion on debian-devel has revealed that there are some
> scenarios that would break horribly and therefore was not made
> default.

I haven't read the discussion, but what about denying mail for
www-data by default?