Bug#446367: exim4 reads /etc/exim4/exim4.conf instead of /var/lib/exim4/config.autogenerated

[Vincent Lefevre]

Package: exim4
Version: 4.68-1
Severity: important

As shown by strace, exim4 reads /etc/exim4/exim4.conf instead of
/var/lib/exim4/config.autogenerated (Exim's main configuration file
according to the update-exim4.conf(8) man page, referenced by the
exim4-config_files(5) man page), leading to incorrect configuration
(and bad address qualification). Indeed my mail name is
vin.lip.ens-lyon.fr, but due to this problem, I get:

vin:~> exim -bP | grep '^qualify'
qualify_domain = vin.ens-lyon.fr
qualify_recipient = vin.ens-lyon.fr

These values come from the file /etc/exim4/exim4.conf (I don't know why
it is there: it has the date 2006-10-03 16:08:55 -- I think this is when
I installed the machine).

A "dpkg-reconfigure exim4-config" didn't change anything.

-- Package-specific info:
Exim version 4.68 #1 built 07-Oct-2007 22:03:11
Copyright (c) University of Cambridge 2006
Berkeley DB: Berkeley DB 4.6.19: (August 10, 2007)
Support for: crypteq iconv() IPv6 GnuTLS move_frozen_messages
Lookups: lsearch wildlsearch nwildlsearch iplsearch cdb dbm dbmnz dnsdb dsearch nis nis0 passwd
Authenticators: cram_md5 plaintext
Routers: accept dnslookup ipliteral manualroute queryprogram redirect
Transports: appendfile/maildir/mailstore autoreply lmtp pipe smtp
Fixed never_users: 0
Size of off_t: 8
Configuration file is /etc/exim4/exim4.conf
# /etc/exim4/update-exim4.conf.conf
#
# Edit this file and /etc/mailname by hand and execute update-exim4.conf
# yourself or use 'dpkg-reconfigure exim4-config'

dc_eximconfig_configtype='internet'
dc_other_hostnames=''
dc_local_interfaces='127.0.0.1'
dc_readhost=''
dc_relay_domains=''
dc_minimaldns='false'
dc_relay_nets=''
dc_smarthost=''
CFILEMODE='644'
dc_use_split_config='false'
dc_hide_mailname=''
dc_mailname_in_oh='true'
dc_localdelivery='mail_spool'
mailname:vin.lip.ens-lyon.fr

-- System Information:
Debian Release: lenny/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (500, 'stable')
Architecture: i386 (i686)

Kernel: Linux 2.6.22-1-686-bigmem (SMP w/2 CPU cores)
Locale: LANG=POSIX, LC_CTYPE=en_US.ISO8859-1 (charmap=ISO-8859-1)
Shell: /bin/sh linked to /bin/bash

Versions of packages exim4 depends on:
ii  debconf [debconf-2.0]         1.5.14     Debian configuration management sy
ii  exim4-base                    4.68-1     support files for all Exim MTA (v4
ii  exim4-daemon-light            4.68-1     lightweight Exim MTA (v4) daemon

exim4 recommends no packages.

-- debconf information:
* exim4/drec: