Bug#626011: exim4: default host_lookup_order should be consistent with nsswitch.conf

[ricola]

Package: exim4
Severity: normal


The default value of the host_lookup_order option is to do a DNS lookup
first, and then to try a local lookup. This should be made consistent
with the default nsswitch.conf configuration that tries first a local
lookup, and then a DNS lookup.

This bug can raise a privacy issue since with the default configuration,
a DNS query can leak the hostname while trying to deliver a mail
locally.

-- System Information:
Debian Release: 6.0.1
Architecture: i386 (i686)

Kernel: Linux 2.6.32-5-686 (SMP w/1 CPU core)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages exim4 depends on:
ii  debconf [debconf-2.0]         1.5.36.1   Debian configuration management sy
pn  exim4-base                    <none>     (no description available)
pn  exim4-daemon-light | exim4-da <none>     (no description available)

exim4 recommends no packages.

exim4 suggests no packages.