dovecot - Jun 2008 - v1.1.1: Some files not created with dovecot-shared permissions

Hi,

    I use dovecot-shared to add read permissions to the group in my mail 
server, which uses virtual users. This is only to ease backups.

    However, a few files are not created with the permissions in 
dovecot-shared. I've seen this happen to 'subscriptions', 
'maildirfolder' (when dovecot-shared exists; the change to correctly 
create maildirfolder in this case is very recent), and possibly 
'maildirsize' (I'm not sure about this one, it might be exim that is
creating it with wrong permissions.)

     This has been tested in recent snapshot package, from the Debian 
repository listed at http://wiki.dovecot.org/PrebuiltBinaries. Here's 
dovecot -n for reference:
# 1.1.1: /etc/dovecot/dovecot.conf
log_path: /var/log/dovecot/main.log
info_log_path: /var/log/dovecot/info.log
log_timestamp: %Y-%m-%d %H:%M:%S
login_dir: /var/run/dovecot/login
login_executable: /usr/lib/dovecot/imap-login
login_processes_count: 1
first_valid_uid: 100
mail_privileged_group: mail
mail_location: 
maildir:/home/vmail/%d/%n/INBOX:INDEX=/home/vmail/%d/%n/dovecotidx
mail_plugins: quota imap_quota
auth default:
  mechanisms: plain login cram-md5
  passdb:
    driver: passwd-file
    args: username_format=%n /home/vmail/%d/db/passwd
  passdb:
    driver: pam
  userdb:
    driver: static
    args: uid=104 gid=8 home=/home/vmail/%d/%n
  userdb:
    driver: passwd
  socket:
    type: listen
    client:
      path: /var/run/dovecot/auth-client
      mode: 438
plugin:
  quota: maildir

On Tue, 2008-06-24 at 17:20 -0300, Eduardo M KALINOWSKI
wrote:
> Hi,
> 
>     I use dovecot-shared to add read permissions to the group in my mail 
> server, which uses virtual users. This is only to ease backups.
> 
>     However, a few files are not created with the permissions in 
> dovecot-shared. I've seen this happen to 'subscriptions', 
> 'maildirfolder' (when dovecot-shared exists; the change to
correctly
> create maildirfolder in this case is very recent), and possibly 
> 'maildirsize' (I'm not sure about this one, it might be exim
that is
> creating it with wrong permissions.)
Fixed for maildirfolder creation:
http://hg.dovecot.org/dovecot-1.1/rev/70523f420d35

As for subscriptions and maildirsize .. well, those are more difficult
and I'm not sure if I should do such a change for v1.1.x releases
anymore since it would change the behavior.

dovecot-shared file is supposed to be a per-mailbox configuration file.
As a special case it's also copied to newly created mailboxes. But I'm
not sure if it should affect global files such as maildirsize and
subscriptions..

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Timo Sirainen escreveu:
> As for subscriptions and maildirsize .. well, those are more difficult
> and I'm not sure if I should do such a change for v1.1.x releases
> anymore since it would change the behavior.
>   
maildirsize is actually quite discardable, so it's not a big deal.

However, the subscriptions file is somewhat important to backup (even if 
not essential), so that the users do not have to set their subscriptions 
agains should disaster happen.

The solution you mentioned in the other message seems fine.