[Dovecot] permissions for dbox attachment directory

[imap at tnde.org]

> On Sat, 2011-06-25 at 03:58 -0400, imap at tnde.org wrote:
>> I am running dovecot 2.0.13 on CentOS5, set up with only local system
>> users, and single instance store set up in a single directory.
>>
>> e.g.
>> mail_attachment_dir = /var/mail/attachments
>
> Currently you can't. I was a bit lazy in implementing this code not to
> preserve permissions. The idea would be anyway that you could
> make /var/mail/attachments 02770 and e.g. group=mail. Then set
> mail_access_groups=mail to Dovecot. Now the code should have created new
> directories under that with the same permissions and the files as 0660,
> but looks like it doesn't. The code is in src/lib-fs/fs-posix.c if you
> want to fix it yourself. You could as a workaround simply change all
> 0600 -> 0660 and 0700 -> 0770 and I guess it would work.
>
Ok, if I understand you correctly, I would need to chmod to 660/770, but
it would only work on existing folders, and every new item will be created
as 600/700?

I guess the best way is setting up virtual users, presumably these work
under a single system account? (for the time being this is running on a
test server, using the simplest setup with system users)

Thanks for your help!