dovecot - Apr 2011 - Umask of Homedir

Hello,

I following the instrucions of:
http://wiki2.dovecot.org/SharedMailboxes/Permissions

When the user receive the first mail, dovecot create the directory structure
always using mode 0700, if i change the permission of the user maildir all
new mails arrived get the correct umask:
dovecot: lmtp(24960, *): Debug: Namespace INBOX.: Using permissions from
.../maildir: mode=0770

The problem is: I need to all accounts have the permission 0770. Tried to
use the option: mail_access_groups but doesn't work at all when the first
creation of the user path.

"For example a simple way to set up shared mailbox access for all system
users is to make all mail dirs/files 0770/0660 mode and owned by group
"sharedmail" and then set mail_access_groups=sharedmail. Using more
fine
grained groups of course leaks less mail data in case there's a security
hole in Dovecot"

Is a bug?

My dovecot version:

doveconf  -n
# 2.0.12 (811a6d173bb2): /etc/dovecot/dovecot.conf
# OS: Linux 2.6.32-5-amd64 x86_64 Debian 6.0.1

Access groups:
mail_access_groups = _sysadms

Thanks and sorry for bad english.

On Fri, 2011-04-15 at 12:43 -0300, Francisco Wagner C. Freire wrote:
> The problem is: I need to all accounts have the permission 0770. Tried to
> use the option: mail_access_groups but doesn't work at all when the
first
> creation of the user path.
This setting only gives the process access to extra groups. It doesn't
change any behavior.
> "For example a simple way to set up shared mailbox access for all
system
> users is to make all mail dirs/files 0770/0660 mode and owned by group
> "sharedmail" and then set mail_access_groups=sharedmail. Using
more fine
> grained groups of course leaks less mail data in case there's a
security
> hole in Dovecot"
This doesn't talk about the initial maildir creation, only what happens
with existing ones..
> doveconf  -n
You left out a bit too much. What is your mail_location? There may be an
easy solution for this.