[Pkg-mailman-hackers] Bug#603904: Fresh installation of mailman has wrong permissions, causes archiving to fail

[NERvOus]

Package: mailman
Version: 1:2.1.15-1
Followup-For: Bug #603904

I confirm this problem is still happening on wheezy.
It only affects private archives.
The easy solution is to add the user "list" to the "www-data" group:

adduser list www-data
/etc/init.d/mailman restart

This way mailman (running as "list") can write to
/var/lib/mailman/archive which is owned by group "www-data".

-- System Information:
Debian Release: wheezy/sid
  APT prefers testing
  APT policy: (500, 'testing')
Architecture: amd64 (x86_64)

Kernel: Linux 3.2.0-1-amd64 (SMP w/1 CPU core)
Locale: LANG=C, LC_CTYPE=C (charmap=ANSI_X3.4-1968)
Shell: /bin/sh linked to /bin/dash

Versions of packages mailman depends on:
ii  apache2                      2.2.22-1
ii  apache2-mpm-prefork [httpd]  2.2.22-1
ii  cron                         3.0pl1-121
ii  debconf [debconf-2.0]        1.5.41
ii  libc6                        2.13-27
ii  logrotate                    3.8.1-1
ii  lsb-base                     3.2-28.1
ii  pwgen                        2.06-1+b2
ii  python                       2.7.2-10
ii  ucf                          3.0025+nmu2

Versions of packages mailman recommends:
ii  postfix [mail-transport-agent]  2.8.7-1

Versions of packages mailman suggests:
pn  listadmin     <none>
ii  lynx          2.8.8dev.12-2
pn  spamassassin  <none>

-- debconf information:
* mailman/site_languages: en
  mailman/queue_files_present: abort installation
* mailman/used_languages:
* mailman/default_server_language: en
* mailman/create_site_list: